{
  "average_delay": 4.364,
  "average_delay_with_out_empty_turn": 6.997,
  "average_onscreen_delay": 1.923,
  "average_typing_delay": 2.441,
  "average_typing_duration": 5.443,
  "average_wpm": 17,
  "average_wpm_with_out_empty_turn": 55,
  "agents": [
    {
      "agent_id": 14,
      "average_delay": 7.697,
      "average_delay_with_out_empty_turn": 7.684,
      "average_onscreen_delay": 6.394,
      "average_typing_delay": 1.302,
      "average_typing_duration": 8.54,
      "average_wpm": 59,
      "average_wpm_with_out_empty_turn": 67
    },
    {
      "agent_id": 33,
      "average_delay": 5.968,
      "average_delay_with_out_empty_turn": 5.829,
      "average_onscreen_delay": 4.328,
      "average_typing_delay": 1.64,
      "average_typing_duration": 11.059,
      "average_wpm": 43,
      "average_wpm_with_out_empty_turn": 50
    },
    {
      "agent_id": 36,
      "average_delay": 3.542,
      "average_delay_with_out_empty_turn": 7.782,
      "average_onscreen_delay": 0.741,
      "average_typing_delay": 2.802,
      "average_typing_duration": 3.786,
      "average_wpm": 6,
      "average_wpm_with_out_empty_turn": 57
    },
    {
      "agent_id": 43,
      "average_delay": 6.591,
      "average_delay_with_out_empty_turn": 6.689,
      "average_onscreen_delay": 5.345,
      "average_typing_delay": 1.247,
      "average_typing_duration": 11.111,
      "average_wpm": 41,
      "average_wpm_with_out_empty_turn": 45
    }
  ],
  "messages": [
    {
      "message_id": 0,
      "agent_id": 14,
      "delay": 5.042,
      "onscreen_delay": 0,
      "typing_delay": 5.042,
      "typing_duration": 5.042,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 1,
      "agent_id": 33,
      "delay": 4.433,
      "onscreen_delay": 0,
      "typing_delay": 4.433,
      "typing_duration": 6.319,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 2,
      "agent_id": 36,
      "delay": 2.315,
      "onscreen_delay": 2.264,
      "typing_delay": 0.051,
      "typing_duration": 4.259,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 3,
      "agent_id": 43,
      "delay": 0.429,
      "onscreen_delay": 0,
      "typing_delay": 0.429,
      "typing_duration": 4.811,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 4,
      "agent_id": 14,
      "delay": 4.813,
      "onscreen_delay": 0,
      "typing_delay": 4.813,
      "typing_duration": 4.813,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 5,
      "agent_id": 33,
      "delay": 5.485,
      "onscreen_delay": 0,
      "typing_delay": 5.485,
      "typing_duration": 5.485,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 6,
      "agent_id": 36,
      "delay": 4.164,
      "onscreen_delay": 0,
      "typing_delay": 4.164,
      "typing_duration": 4.164,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 7,
      "agent_id": 43,
      "delay": 1.007,
      "onscreen_delay": 0,
      "typing_delay": 1.007,
      "typing_duration": 10.193,
      "wpm": 77,
      "message": "(คุณครูอุมาพร) สวัสดีค่ะ วันนี้นะคะ เราจะมาพูดคุยถึง"
    },
    {
      "message_id": 8,
      "agent_id": 14,
      "delay": 6.191,
      "onscreen_delay": 5.717,
      "typing_delay": 0.474,
      "typing_duration": 8.586,
      "wpm": 91,
      "message": "บทที่ 1 เรื่องเซตกันต่อนะคะ ซึ่งในบทเรียนที่แล้วนะคะ "
    },
    {
      "message_id": 9,
      "agent_id": 33,
      "delay": 4.585,
      "onscreen_delay": 4.148,
      "typing_delay": 0.437,
      "typing_duration": 13.876,
      "wpm": 62,
      "message": "นักเรียนจะได้เรียนรู้เกี่ยวกับความหมายและเซตต่าง ๆ ไปแล้ว "
    },
    {
      "message_id": 10,
      "agent_id": 36,
      "delay": 9.875,
      "onscreen_delay": 9.143,
      "typing_delay": 0.732,
      "typing_duration": 11.656,
      "wpm": 72,
      "message": "เดี๋ยวเรามาดูกันค่ะ ว่าในบทเรียนวันนี้นักเรียนจะได้เรียน"
    },
    {
      "message_id": 11,
      "agent_id": 43,
      "delay": 7.654,
      "onscreen_delay": 7.356,
      "typing_delay": 0.298,
      "typing_duration": 14.035,
      "wpm": 49,
      "message": "เกี่ยวกับอะไรบ้างค่ะ เดี๋ยวเรามาดูวัตถุประสงค์"
    },
    {
      "message_id": 12,
      "agent_id": 14,
      "delay": 10.035,
      "onscreen_delay": 9.811,
      "typing_delay": 0.224,
      "typing_duration": 8.576,
      "wpm": 80,
      "message": "กันดีกว่านะคะ ในบทเรียนนี้นะคะ จะพูดถึงควาหมาย"
    },
    {
      "message_id": 13,
      "agent_id": 33,
      "delay": 6.034,
      "onscreen_delay": 5.665,
      "typing_delay": 0.369,
      "typing_duration": 7.56,
      "wpm": 67,
      "message": "ของเซตว่างค่ะ บอกจำนวนสมาชิกของเซต "
    },
    {
      "message_id": 14,
      "agent_id": 36,
      "delay": 3.559,
      "onscreen_delay": 3.303,
      "typing_delay": 0.256,
      "typing_duration": 9.746,
      "wpm": 52,
      "message": "บอกความหมายของเซตจำกัดและเซตอนันต์"
    },
    {
      "message_id": 15,
      "agent_id": 43,
      "delay": 5.745,
      "onscreen_delay": 5.322,
      "typing_delay": 0.423,
      "typing_duration": 9.2,
      "wpm": 54,
      "message": "เขียนสัญลักษณ์ของเอกภพสัมพัทธ์ค่ะ "
    },
    {
      "message_id": 16,
      "agent_id": 14,
      "delay": 5.2,
      "onscreen_delay": 4.913,
      "typing_delay": 0.287,
      "typing_duration": 8.228,
      "wpm": 93,
      "message": "เดี๋ยวเราไปเริ่มเรียนบทเรียนกันดีกว่าค่ะ จากภาพนะคะ "
    },
    {
      "message_id": 17,
      "agent_id": 33,
      "delay": 4.226,
      "onscreen_delay": 3.893,
      "typing_delay": 0.333,
      "typing_duration": 13.251,
      "wpm": 40,
      "message": "นักเรียนจะเห็นว่าเป็นภาชนะ 1 ใบนะคะ "
    },
    {
      "message_id": 18,
      "agent_id": 36,
      "delay": 9.25,
      "onscreen_delay": 8.582,
      "typing_delay": 0.668,
      "typing_duration": 11.238,
      "wpm": 44,
      "message": "1, 3, 5, 7, 9 เดี๋ยวเรามาทบทวนการ"
    },
    {
      "message_id": 19,
      "agent_id": 43,
      "delay": 7.238,
      "onscreen_delay": 6.625,
      "typing_delay": 0.613,
      "typing_duration": 11.741,
      "wpm": 56,
      "message": "แจกแจงสมาชิกกันดีกว่าค่ะ นักเรียนสามารถเขียน"
    },
    {
      "message_id": 20,
      "agent_id": 14,
      "delay": 7.741,
      "onscreen_delay": 7.598,
      "typing_delay": 0.143,
      "typing_duration": 12.023,
      "wpm": 81,
      "message": "ได้อย่างไรบ้างคะ อันดับแรกเราจะต้องเขียนวงเล็บปีกกาใช่หรือเปล่าคะ "
    },
    {
      "message_id": 21,
      "agent_id": 33,
      "delay": 8.022,
      "onscreen_delay": 7.067,
      "typing_delay": 0.955,
      "typing_duration": 9.899,
      "wpm": 36,
      "message": "ตามด้วยสมาชิกคือ 1, 3, 5"
    },
    {
      "message_id": 22,
      "agent_id": 36,
      "delay": 5.898,
      "onscreen_delay": 5.35,
      "typing_delay": 0.548,
      "typing_duration": 7.987,
      "wpm": 62,
      "message": "7 นะคะ แล้วก็ 9 ค่ะ เดี๋ยวเรามาดู"
    },
    {
      "message_id": 23,
      "agent_id": 43,
      "delay": 3.986,
      "onscreen_delay": 3.4,
      "typing_delay": 0.586,
      "typing_duration": 14.17,
      "wpm": 44,
      "message": "ภาพถัดมานะคะ ภาพถัดมาเป็นพยัญชนะเช่นกันค่ะ "
    },
    {
      "message_id": 24,
      "agent_id": 14,
      "delay": 10.17,
      "onscreen_delay": 10.058,
      "typing_delay": 0.112,
      "typing_duration": 11.318,
      "wpm": 85,
      "message": "ตัวอักษรภาษาอังกฤษเอาไว้ นักเรียนสามารถเขียนเซตนี้ได้หรือเปล่าคะ "
    },
    {
      "message_id": 25,
      "agent_id": 33,
      "delay": 7.317,
      "onscreen_delay": 5.366,
      "typing_delay": 1.951,
      "typing_duration": 14.638,
      "wpm": 23,
      "message": "ก็คือเราจะเขียนเป็น a, "
    },
    {
      "message_id": 26,
      "agent_id": 36,
      "delay": 10.637,
      "onscreen_delay": 10.219,
      "typing_delay": 0.418,
      "typing_duration": 6.911,
      "wpm": 22,
      "message": "c, d, e, f "
    },
    {
      "message_id": 27,
      "agent_id": 43,
      "delay": 6.635,
      "onscreen_delay": 6.341,
      "typing_delay": 0.294,
      "typing_duration": 14.174,
      "wpm": 44,
      "message": "ใช่หรือเปล่าล่ะค่ะ เดี๋ยวเรามาดูภาชนะที่ 3 "
    },
    {
      "message_id": 28,
      "agent_id": 14,
      "delay": 10.173,
      "onscreen_delay": 8.422,
      "typing_delay": 1.751,
      "typing_duration": 10.556,
      "wpm": 44,
      "message": "ภาชนะใบสุดท้ายนักเรียนจะเห็นว่า"
    },
    {
      "message_id": 29,
      "agent_id": 33,
      "delay": 6.555,
      "onscreen_delay": 4.92,
      "typing_delay": 1.635,
      "typing_duration": 13.97,
      "wpm": 59,
      "message": "ไม่มีสมาชิกใด ๆ อยู่เลยนะคะ นักเรียนทราบหรือเปล่าคะ ว่า"
    },
    {
      "message_id": 30,
      "agent_id": 36,
      "delay": 9.97,
      "onscreen_delay": 9.535,
      "typing_delay": 0.435,
      "typing_duration": 15.001,
      "wpm": 59,
      "message": "ถ้าไม่มีสมาชิกอยู่เลยนักเรียนจะสามารถเขียนเชตได้อย่างไรบ้าง "
    },
    {
      "message_id": 31,
      "agent_id": 43,
      "delay": 11.001,
      "onscreen_delay": 9.997,
      "typing_delay": 1.004,
      "typing_duration": 15,
      "wpm": 54,
      "message": "เดี๋ยวเรามาดูกันดีกว่าค่ะ เราจะเรียกเซตที่ไม่ม่่สมาชิก"
    },
    {
      "message_id": 32,
      "agent_id": 14,
      "delay": 11,
      "onscreen_delay": 10.259,
      "typing_delay": 0.741,
      "typing_duration": 9.282,
      "wpm": 69,
      "message": "นะคะ ว่า \"เซตว่าง\" ค่ะ โดยจะเขียนแทนเซตว่าง"
    },
    {
      "message_id": 33,
      "agent_id": 33,
      "delay": 6.999,
      "onscreen_delay": 6.702,
      "typing_delay": 0.297,
      "typing_duration": 15.001,
      "wpm": 51,
      "message": "นะคะ ด้วยสัญลักษณ์ดังนี้ค่ะ เป็นสัญลักษณ์วงเล็บปีกก"
    },
    {
      "message_id": 34,
      "agent_id": 36,
      "delay": 11,
      "onscreen_delay": 10.559,
      "typing_delay": 0.441,
      "typing_duration": 9.394,
      "wpm": 77,
      "message": "หรือเราจะใช้สัญลักษณ์วงกลมนะคะ แล้วจะมีขีดทับค่ะ "
    },
    {
      "message_id": 35,
      "agent_id": 43,
      "delay": 7,
      "onscreen_delay": 5.127,
      "typing_delay": 1.873,
      "typing_duration": 11.305,
      "wpm": 42,
      "message": "ตัวอย่างของเซตว่างนะคะ เซตแรกค่ะ "
    },
    {
      "message_id": 36,
      "agent_id": 14,
      "delay": 7.305,
      "onscreen_delay": 6.51,
      "typing_delay": 0.795,
      "typing_duration": 13.135,
      "wpm": 43,
      "message": "ให้เซต A นะคะ ประกอบไปด้วยสมาชิก x ค่ะ "
    },
    {
      "message_id": 37,
      "agent_id": 33,
      "delay": 9.135,
      "onscreen_delay": 8.52,
      "typing_delay": 0.615,
      "typing_duration": 15,
      "wpm": 46,
      "message": "โดยที่ x เป็นชื่อจังหวัดในประเทศไทยที่ขึ้นต้นด"
    },
    {
      "message_id": 38,
      "agent_id": 36,
      "delay": 10.999,
      "onscreen_delay": 10.007,
      "typing_delay": 0.992,
      "typing_duration": 14.121,
      "wpm": 54,
      "message": "นักเรียนทราบไหมคะว่ามีจังหวัดอะไรบ้างในประเทศไทยที่"
    },
    {
      "message_id": 39,
      "agent_id": 43,
      "delay": 10.12,
      "onscreen_delay": 9.288,
      "typing_delay": 0.832,
      "typing_duration": 12.137,
      "wpm": 31,
      "message": "ขึ้นต้นด้วย ฮ ตอบได้ไหมคะ "
    },
    {
      "message_id": 40,
      "agent_id": 14,
      "delay": 8.136,
      "onscreen_delay": 7.972,
      "typing_delay": 0.164,
      "typing_duration": 11.578,
      "wpm": 74,
      "message": "นักเรียนก็คงจะตอบว่าไม่มีจังหวัดอะไรนะคะ ที่ขึ้นต้นด้วย ฮ "
    },
    {
      "message_id": 41,
      "agent_id": 33,
      "delay": 7.578,
      "onscreen_delay": 6.807,
      "typing_delay": 0.771,
      "typing_duration": 10.94,
      "wpm": 30,
      "message": "ฮ นกฮูก ถูกต้องแล้วค่ะ "
    },
    {
      "message_id": 42,
      "agent_id": 36,
      "delay": 6.939,
      "onscreen_delay": 6.15,
      "typing_delay": 0.789,
      "typing_duration": 9.198,
      "wpm": 59,
      "message": "ดังนั้น นะคะ เซต A จึงเป็นเซตว่างค่ะ "
    },
    {
      "message_id": 43,
      "agent_id": 43,
      "delay": 5.197,
      "onscreen_delay": 4.839,
      "typing_delay": 0.358,
      "typing_duration": 12.014,
      "wpm": 49,
      "message": "คุณครูก็จะเขียนว่าเซต A เป็นเซตว่าง โดย"
    },
    {
      "message_id": 44,
      "agent_id": 14,
      "delay": 8.014,
      "onscreen_delay": 7.856,
      "typing_delay": 0.158,
      "typing_duration": 10.082,
      "wpm": 64,
      "message": "ใช้สัญลักษณ์นะคะ เป็นวงกลมและมีขีดแบบนี้ค่ะ "
    },
    {
      "message_id": 45,
      "agent_id": 33,
      "delay": 6.081,
      "onscreen_delay": 4.529,
      "typing_delay": 1.552,
      "typing_duration": 11.68,
      "wpm": 46,
      "message": "ถัดมานะคะ ให้ B ค่ะเป้นเซตของ x นะคะ "
    },
    {
      "message_id": 46,
      "agent_id": 36,
      "delay": 7.679,
      "onscreen_delay": 6.925,
      "typing_delay": 0.754,
      "typing_duration": 10.042,
      "wpm": 58,
      "message": "โดยที่ x เป็นจำนวนจริงค่ะ และ x + 1 = x "
    },
    {
      "message_id": 47,
      "agent_id": 43,
      "delay": 6.042,
      "onscreen_delay": 4.479,
      "typing_delay": 1.563,
      "typing_duration": 14.859,
      "wpm": 35,
      "message": "ค่ะ นักเรียนสามารถหาสมาชิกของเซตนี้"
    },
    {
      "message_id": 48,
      "agent_id": 14,
      "delay": 10.858,
      "onscreen_delay": 10.69,
      "typing_delay": 0.168,
      "typing_duration": 9.342,
      "wpm": 80,
      "message": "ได้หรือเปล่าคะ โดยการหาจำนวนจริงนะคะ ที่แทนค่าลงไป"
    },
    {
      "message_id": 49,
      "agent_id": 33,
      "delay": 6.857,
      "onscreen_delay": 6.547,
      "typing_delay": 0.31,
      "typing_duration": 8.652,
      "wpm": 64,
      "message": "ใน x ค่ะ แล้วทำให้สมการนี้เป็นจริงค่ะ "
    },
    {
      "message_id": 50,
      "agent_id": 36,
      "delay": 4.651,
      "onscreen_delay": 4.331,
      "typing_delay": 0.32,
      "typing_duration": 11.537,
      "wpm": 61,
      "message": "นักเรียนก็คงจะตอบว่าไม่มีสมการใดเลยนะคะ ที่เป็น"
    },
    {
      "message_id": 51,
      "agent_id": 43,
      "delay": 7.537,
      "onscreen_delay": 7.129,
      "typing_delay": 0.408,
      "typing_duration": 10.897,
      "wpm": 65,
      "message": "เป็นจริง เพราะฉะนั้นแล้ว เซตนี้ ไม่มีสมาชิกนะคะ "
    },
    {
      "message_id": 52,
      "agent_id": 14,
      "delay": 6.895,
      "onscreen_delay": 6.516,
      "typing_delay": 0.379,
      "typing_duration": 7.396,
      "wpm": 71,
      "message": "จะได้ว่าเซต B เป็นเซตว่างเช่นกันค่ะ "
    },
    {
      "message_id": 53,
      "agent_id": 33,
      "delay": 3.979,
      "onscreen_delay": 0,
      "typing_delay": 3.979,
      "typing_duration": 7.457,
      "wpm": 32,
      "message": "ต่อไปเดี๋ยวเรามา"
    },
    {
      "message_id": 54,
      "agent_id": 36,
      "delay": 3.457,
      "onscreen_delay": 2.892,
      "typing_delay": 0.565,
      "typing_duration": 8.598,
      "wpm": 63,
      "message": "ดูการหาจำนวนสมาชิกของเซตกันดีกว่าค่ะ "
    },
    {
      "message_id": 55,
      "agent_id": 43,
      "delay": 4.598,
      "onscreen_delay": 3.369,
      "typing_delay": 1.229,
      "typing_duration": 13.527,
      "wpm": 39,
      "message": "ในการหาสมาชิกของเซตนะคะ ที่มีสมาชิก"
    },
    {
      "message_id": 56,
      "agent_id": 14,
      "delay": 9.527,
      "onscreen_delay": 9.219,
      "typing_delay": 0.308,
      "typing_duration": 11.363,
      "wpm": 51,
      "message": "ไม่มากนะคะ เราสามารถทำได้โดยเขียนแจกแจง"
    },
    {
      "message_id": 57,
      "agent_id": 33,
      "delay": 7.362,
      "onscreen_delay": 6.505,
      "typing_delay": 0.857,
      "typing_duration": 10.89,
      "wpm": 56,
      "message": "สมาชิกนะคะ แล้วแจงนับสมาชิกทั้งหมดนั้นค่ะ "
    },
    {
      "message_id": 58,
      "agent_id": 36,
      "delay": 6.89,
      "onscreen_delay": 6.198,
      "typing_delay": 0.692,
      "typing_duration": 7.325,
      "wpm": 70,
      "message": "เดี๋ยวเรามาดูตัวอย่างกันดีกว่านะคะ "
    },
    {
      "message_id": 59,
      "agent_id": 43,
      "delay": 3.323,
      "onscreen_delay": 3.114,
      "typing_delay": 0.209,
      "typing_duration": 13.747,
      "wpm": 49,
      "message": "ตัวอย่างนี้นะคะ จงหาจำนวนสมาชิกของเซตต่อไปนี้ "
    },
    {
      "message_id": 60,
      "agent_id": 14,
      "delay": 9.747,
      "onscreen_delay": 9.508,
      "typing_delay": 0.239,
      "typing_duration": 7.794,
      "wpm": 92,
      "message": "ข้อที่ 1 เซตว่าง ข้อที่ 2 เซต A ค่ะ ประกอบไปด้วย"
    },
    {
      "message_id": 61,
      "agent_id": 33,
      "delay": 5.747,
      "onscreen_delay": 4.869,
      "typing_delay": 0.878,
      "typing_duration": 11.807,
      "wpm": 41,
      "message": "สมาชิก x โดยที่ x เป้นพยัญชนะของ"
    },
    {
      "message_id": 62,
      "agent_id": 36,
      "delay": 7.806,
      "onscreen_delay": 7.661,
      "typing_delay": 0.145,
      "typing_duration": 5.393,
      "wpm": 70,
      "message": "ภาษาไทย ข้อที่ 3 เซตของ B "
    },
    {
      "message_id": 63,
      "agent_id": 43,
      "delay": 3.806,
      "onscreen_delay": 3.005,
      "typing_delay": 0.801,
      "typing_duration": 10.089,
      "wpm": 45,
      "message": "ประกอบไปด้วยสมาชิก x นะคะ เป็น"
    },
    {
      "message_id": 64,
      "agent_id": 14,
      "delay": 6.088,
      "onscreen_delay": 5.82,
      "typing_delay": 0.268,
      "typing_duration": 8.312,
      "wpm": 88,
      "message": "คี่บวกที่มี 2 หลักค่ะ เดี๋ยวเรามาเริ่มการหาสมาชิก"
    },
    {
      "message_id": 65,
      "agent_id": 33,
      "delay": 4.31,
      "onscreen_delay": 3.933,
      "typing_delay": 0.377,
      "typing_duration": 11.529,
      "wpm": 64,
      "message": "ในข้อที่ 1 กันดีกว่านะคะ ข้อที่ 1 นะคะ เซตว่างค่ะ "
    },
    {
      "message_id": 66,
      "agent_id": 36,
      "delay": 7.528,
      "onscreen_delay": 6.283,
      "typing_delay": 1.245,
      "typing_duration": 10.102,
      "wpm": 37,
      "message": "จากความหมายของเซตว่างนะคะ "
    },
    {
      "message_id": 67,
      "agent_id": 43,
      "delay": 6.101,
      "onscreen_delay": 5.817,
      "typing_delay": 0.284,
      "typing_duration": 8.158,
      "wpm": 55,
      "message": "นะคะ เป็นเซตที่ไม่มีสมาชิกนะคะ "
    },
    {
      "message_id": 68,
      "agent_id": 14,
      "delay": 4.497,
      "onscreen_delay": 0,
      "typing_delay": 4.497,
      "typing_duration": 4.497,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 69,
      "agent_id": 33,
      "delay": 4.897,
      "onscreen_delay": 0,
      "typing_delay": 4.897,
      "typing_duration": 6.583,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 70,
      "agent_id": 36,
      "delay": 2.58,
      "onscreen_delay": 1.645,
      "typing_delay": 0.935,
      "typing_duration": 4.129,
      "wpm": 54,
      "message": "จึงจะได้ว่านะคะ "
    },
    {
      "message_id": 71,
      "agent_id": 43,
      "delay": 1.497,
      "onscreen_delay": 0,
      "typing_delay": 1.497,
      "typing_duration": 7.018,
      "wpm": 49,
      "message": "เซตว่างนะคะ มีสมาชิก... "
    },
    {
      "message_id": 72,
      "agent_id": 14,
      "delay": 3.017,
      "onscreen_delay": 0.272,
      "typing_delay": 2.745,
      "typing_duration": 4.322,
      "wpm": 28,
      "message": "0 ตัวค่ะ "
    },
    {
      "message_id": 73,
      "agent_id": 33,
      "delay": 3.937,
      "onscreen_delay": 0,
      "typing_delay": 3.937,
      "typing_duration": 7.361,
      "wpm": 18,
      "message": "ถัดมานะคะ "
    },
    {
      "message_id": 74,
      "agent_id": 36,
      "delay": 3.36,
      "onscreen_delay": 3.22,
      "typing_delay": 0.14,
      "typing_duration": 7.717,
      "wpm": 95,
      "message": "เป็นข้อที่ 2 นะคะ เดี๋ยวเรมาดูกันค่ะ ในข้อนี้นะคะ "
    },
    {
      "message_id": 75,
      "agent_id": 43,
      "delay": 3.717,
      "onscreen_delay": 3.265,
      "typing_delay": 0.452,
      "typing_duration": 13.588,
      "wpm": 43,
      "message": "เซต A นะคะ เป็นเซตที่เขียนเงือนไขมานะคะ "
    },
    {
      "message_id": 76,
      "agent_id": 14,
      "delay": 9.586,
      "onscreen_delay": 9.057,
      "typing_delay": 0.529,
      "typing_duration": 9.545,
      "wpm": 90,
      "message": "เราต้องทำการเขียนเซตนะคะ เป็นแบบแจกแจงสมาชิกค่ะ เดี๋ยวเรา"
    },
    {
      "message_id": 77,
      "agent_id": 33,
      "delay": 5.586,
      "onscreen_delay": 5.357,
      "typing_delay": 0.229,
      "typing_duration": 12.173,
      "wpm": 58,
      "message": "มาเขียนกันเลยดีกว่านะคะ คุณครูจะเขียนเซต A นะคะ "
    },
    {
      "message_id": 78,
      "agent_id": 36,
      "delay": 8.173,
      "onscreen_delay": 8.027,
      "typing_delay": 0.146,
      "typing_duration": 4.499,
      "wpm": 60,
      "message": "แบบแจกแจงสมาชิกค่ะ "
    },
    {
      "message_id": 79,
      "agent_id": 43,
      "delay": 4.32,
      "onscreen_delay": 0,
      "typing_delay": 4.32,
      "typing_duration": 4.32,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 80,
      "agent_id": 14,
      "delay": 4.291,
      "onscreen_delay": 0,
      "typing_delay": 4.291,
      "typing_duration": 4.291,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 81,
      "agent_id": 33,
      "delay": 4.886,
      "onscreen_delay": 0,
      "typing_delay": 4.886,
      "typing_duration": 4.886,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 82,
      "agent_id": 36,
      "delay": 2.277,
      "onscreen_delay": 0,
      "typing_delay": 2.277,
      "typing_duration": 9.276,
      "wpm": 37,
      "message": "โดยการใช้พยัญชนะภาษาไทย"
    },
    {
      "message_id": 83,
      "agent_id": 43,
      "delay": 5.274,
      "onscreen_delay": 5.055,
      "typing_delay": 0.219,
      "typing_duration": 13.762,
      "wpm": 32,
      "message": "นะคะ ก็คือ เริ่มต้นจาก ก นะคะ "
    },
    {
      "message_id": 84,
      "agent_id": 14,
      "delay": 9.761,
      "onscreen_delay": 9.418,
      "typing_delay": 0.343,
      "typing_duration": 8.886,
      "wpm": 83,
      "message": "ตามด้วย ข ขวด ค่ะ ไปเรื่อย ๆ นะคะ ไปถึงตัวสุดท้าย "
    },
    {
      "message_id": 85,
      "agent_id": 33,
      "delay": 5.76,
      "onscreen_delay": 5.141,
      "typing_delay": 0.619,
      "typing_duration": 8.913,
      "wpm": 39,
      "message": "คือ ฮ นกฮูกค่ะ ในการนับ"
    },
    {
      "message_id": 86,
      "agent_id": 36,
      "delay": 4.912,
      "onscreen_delay": 4.514,
      "typing_delay": 0.398,
      "typing_duration": 13.135,
      "wpm": 63,
      "message": "สมาชิกของเซต A นะคะ นักเรียนก็สามารถนับได้เลยนะคะ ว่า ก"
    },
    {
      "message_id": 87,
      "agent_id": 43,
      "delay": 9.133,
      "onscreen_delay": 7.83,
      "typing_delay": 1.303,
      "typing_duration": 8.292,
      "wpm": 49,
      "message": "-ฮ มีกี่ตัวค่ะ ในที่นี้นะคะ "
    },
    {
      "message_id": 88,
      "agent_id": 14,
      "delay": 5.132,
      "onscreen_delay": 3.637,
      "typing_delay": 1.495,
      "typing_duration": 5.688,
      "wpm": 21,
      "message": "จะได้ว่า"
    },
    {
      "message_id": 89,
      "agent_id": 33,
      "delay": 1.688,
      "onscreen_delay": 1.338,
      "typing_delay": 0.35,
      "typing_duration": 8.437,
      "wpm": 59,
      "message": "เซต A นะคะ มีสมาชิกทั้งหมด 44 ตัว"
    },
    {
      "message_id": 90,
      "agent_id": 36,
      "delay": 4.436,
      "onscreen_delay": 4.137,
      "typing_delay": 0.299,
      "typing_duration": 4.18,
      "wpm": 36,
      "message": "นั่นเองค่ะ "
    },
    {
      "message_id": 91,
      "agent_id": 43,
      "delay": 2.923,
      "onscreen_delay": 0,
      "typing_delay": 2.923,
      "typing_duration": 7.98,
      "wpm": 34,
      "message": "เดี๋ยวเรามาดูข้อ 3 "
    },
    {
      "message_id": 92,
      "agent_id": 14,
      "delay": 3.98,
      "onscreen_delay": 3.828,
      "typing_delay": 0.152,
      "typing_duration": 4.563,
      "wpm": 108,
      "message": "กันต่อเลยดีกว่านะคะ ข้อที่ 3 นะคะ "
    },
    {
      "message_id": 93,
      "agent_id": 33,
      "delay": 2.778,
      "onscreen_delay": 0,
      "typing_delay": 2.778,
      "typing_duration": 11.586,
      "wpm": 39,
      "message": "เป็นการเขียนเซตแบบบอกเงื่อนไขเ"
    },
    {
      "message_id": 94,
      "agent_id": 36,
      "delay": 7.586,
      "onscreen_delay": 7.25,
      "typing_delay": 0.336,
      "typing_duration": 9.291,
      "wpm": 86,
      "message": "เหมือนกันค่ะ เราจะต้องทำการเขียนเซตนี้นะคะ ให้เป็นการ"
    },
    {
      "message_id": 95,
      "agent_id": 43,
      "delay": 5.29,
      "onscreen_delay": 5.009,
      "typing_delay": 0.281,
      "typing_duration": 15.001,
      "wpm": 36,
      "message": "แจกแจงสมาชิกค่ะ คุณครูก็จะเขียนเซต B"
    },
    {
      "message_id": 96,
      "agent_id": 14,
      "delay": 11.001,
      "onscreen_delay": 8.441,
      "typing_delay": 2.56,
      "typing_duration": 6.104,
      "wpm": 44,
      "message": "แบบแจกแจงสมาชิกค่ะ "
    },
    {
      "message_id": 97,
      "agent_id": 33,
      "delay": 7.001,
      "onscreen_delay": 2.104,
      "typing_delay": 4.897,
      "typing_duration": 4.897,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 98,
      "agent_id": 36,
      "delay": 4.335,
      "onscreen_delay": 0,
      "typing_delay": 4.335,
      "typing_duration": 4.335,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 99,
      "agent_id": 43,
      "delay": 4.543,
      "onscreen_delay": 0,
      "typing_delay": 4.543,
      "typing_duration": 4.543,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 100,
      "agent_id": 14,
      "delay": 2.358,
      "onscreen_delay": 0,
      "typing_delay": 2.358,
      "typing_duration": 9.247,
      "wpm": 54,
      "message": "พิจารณาสมาชิกนะคะ นักเรียนจะพบว่า"
    },
    {
      "message_id": 101,
      "agent_id": 33,
      "delay": 5.245,
      "onscreen_delay": 4.889,
      "typing_delay": 0.356,
      "typing_duration": 15.001,
      "wpm": 53,
      "message": "สมาชิกในเซต B นะคะ เป็นจำนวนคี่บวกที่มี 2 หลักค่ะ นัก"
    },
    {
      "message_id": 102,
      "agent_id": 36,
      "delay": 11,
      "onscreen_delay": 10.528,
      "typing_delay": 0.472,
      "typing_duration": 13.041,
      "wpm": 60,
      "message": "หรือเปล่าคะ ว่าจำนวนคี่บวกที่มีสองหลังเป็นจำนวนเลขใด "
    },
    {
      "message_id": 103,
      "agent_id": 43,
      "delay": 9.04,
      "onscreen_delay": 7.487,
      "typing_delay": 1.553,
      "typing_duration": 5.723,
      "wpm": 52,
      "message": "ก็คือ 11 นั่นเองนะคะ "
    },
    {
      "message_id": 104,
      "agent_id": 14,
      "delay": 5.038,
      "onscreen_delay": 4.492,
      "typing_delay": 0.546,
      "typing_duration": 6.237,
      "wpm": 48,
      "message": "ถัดมาล่ะคะ 13 ค่ะ 15 "
    },
    {
      "message_id": 105,
      "agent_id": 33,
      "delay": 2.237,
      "onscreen_delay": 1.902,
      "typing_delay": 0.335,
      "typing_duration": 14.511,
      "wpm": 51,
      "message": "นะคะ ไปเรื่อย ๆ จนถึงตัวสุดท้ายที่มีคี่บวก 2 หลัก "
    },
    {
      "message_id": 106,
      "agent_id": 36,
      "delay": 10.511,
      "onscreen_delay": 10.329,
      "typing_delay": 0.182,
      "typing_duration": 5.406,
      "wpm": 33,
      "message": "ก็คือ 99 ค่ะ "
    },
    {
      "message_id": 107,
      "agent_id": 43,
      "delay": 6.51,
      "onscreen_delay": 6.231,
      "typing_delay": 0.279,
      "typing_duration": 14.254,
      "wpm": 56,
      "message": "หลังจากนั้นนะคะ นักเรียนทำการนับค่ะ สมาชิกในเซต B ค่ะ "
    },
    {
      "message_id": 108,
      "agent_id": 14,
      "delay": 10.254,
      "onscreen_delay": 5.352,
      "typing_delay": 4.902,
      "typing_duration": 4.902,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 109,
      "agent_id": 33,
      "delay": 6.254,
      "onscreen_delay": 2.017,
      "typing_delay": 4.237,
      "typing_duration": 4.237,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 110,
      "agent_id": 36,
      "delay": 4.1,
      "onscreen_delay": 0,
      "typing_delay": 4.1,
      "typing_duration": 4.1,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 111,
      "agent_id": 43,
      "delay": 3.625,
      "onscreen_delay": 0,
      "typing_delay": 3.625,
      "typing_duration": 10.765,
      "wpm": 26,
      "message": "จะได้ว่านะคะ สมาชิก"
    },
    {
      "message_id": 112,
      "agent_id": 14,
      "delay": 6.764,
      "onscreen_delay": 6.588,
      "typing_delay": 0.176,
      "typing_duration": 8.724,
      "wpm": 50,
      "message": "เซต B มีจำนวนสมาชิก 45 ตัวค่ะ "
    },
    {
      "message_id": 113,
      "agent_id": 33,
      "delay": 4.723,
      "onscreen_delay": 3.226,
      "typing_delay": 1.497,
      "typing_duration": 15.001,
      "wpm": 43,
      "message": "เดี๋ยวเรามาดูความหมายของเซตจำกัดและเซอนันต์"
    },
    {
      "message_id": 114,
      "agent_id": 36,
      "delay": 11,
      "onscreen_delay": 10.801,
      "typing_delay": 0.199,
      "typing_duration": 14.824,
      "wpm": 38,
      "message": "กันต่อเลยนะคะ เรียกเซตที่มีจำนวนสมาชิก"
    },
    {
      "message_id": 115,
      "agent_id": 43,
      "delay": 10.824,
      "onscreen_delay": 10.112,
      "typing_delay": 0.712,
      "typing_duration": 12.536,
      "wpm": 34,
      "message": "สมาชิกเต็มบวกใด ๆ เป็น 0 ค่ะ "
    },
    {
      "message_id": 116,
      "agent_id": 14,
      "delay": 8.534,
      "onscreen_delay": 8.305,
      "typing_delay": 0.229,
      "typing_duration": 7.913,
      "wpm": 44,
      "message": "ว่าเซตจำกัดค่ะ ตัวอย่าง"
    },
    {
      "message_id": 117,
      "agent_id": 33,
      "delay": 4.534,
      "onscreen_delay": 4.265,
      "typing_delay": 0.269,
      "typing_duration": 11.461,
      "wpm": 59,
      "message": "ของเซตจำกัดนะคะ ตัวอย่างแรกค่ะ เซตของ 1, 2, 3 "
    },
    {
      "message_id": 118,
      "agent_id": 36,
      "delay": 7.459,
      "onscreen_delay": 7.048,
      "typing_delay": 0.411,
      "typing_duration": 12.507,
      "wpm": 65,
      "message": "ไปเรื่อย ๆ จนถึง 20 ค่ะ นักเรียนจะเห็นนะคะ ว่ามีสมาชิก"
    },
    {
      "message_id": 119,
      "agent_id": 43,
      "delay": 8.506,
      "onscreen_delay": 7.727,
      "typing_delay": 0.779,
      "typing_duration": 10.755,
      "wpm": 59,
      "message": "ทั้งหมด 20 ตัว ซึ่ง 20 เป็นจำนวนเต็มบวกค่ะ "
    },
    {
      "message_id": 120,
      "agent_id": 14,
      "delay": 6.755,
      "onscreen_delay": 6.177,
      "typing_delay": 0.578,
      "typing_duration": 12.943,
      "wpm": 53,
      "message": "เราเลยเรียกเซตนี้นะคะ ว่า \"เซตจำกัด\" ค่ะ ต่อไป"
    },
    {
      "message_id": 121,
      "agent_id": 33,
      "delay": 8.942,
      "onscreen_delay": 8.515,
      "typing_delay": 0.427,
      "typing_duration": 13.567,
      "wpm": 51,
      "message": "นะคะ เป็นเซตของ X ค่ะ โดยที่ x เป็นชื่อจังหวัด"
    },
    {
      "message_id": 122,
      "agent_id": 36,
      "delay": 9.565,
      "onscreen_delay": 9.141,
      "typing_delay": 0.424,
      "typing_duration": 9.111,
      "wpm": 69,
      "message": "ประเทศไทยค่ะ นักเรียนสามารถตอบได้ไหมคะ ว่า"
    },
    {
      "message_id": 123,
      "agent_id": 43,
      "delay": 5.564,
      "onscreen_delay": 5.148,
      "typing_delay": 0.416,
      "typing_duration": 7.759,
      "wpm": 64,
      "message": "มีจำนวนสมาชิกทั้งหมดกี่ตัว 77 ตัว"
    },
    {
      "message_id": 124,
      "agent_id": 14,
      "delay": 3.759,
      "onscreen_delay": 3.44,
      "typing_delay": 0.319,
      "typing_duration": 7.789,
      "wpm": 104,
      "message": "นั่นเองค่ะ เพราะฉะนั้นแล้ว 77 นะคะ เป็นจำนวนเต็มบวกค่ะ "
    },
    {
      "message_id": 125,
      "agent_id": 33,
      "delay": 3.788,
      "onscreen_delay": 3.111,
      "typing_delay": 0.677,
      "typing_duration": 11.332,
      "wpm": 48,
      "message": "เลยเรียกเซตนี้ว่าเซตจำกัดเช่นกันนะคะ "
    },
    {
      "message_id": 126,
      "agent_id": 36,
      "delay": 7.329,
      "onscreen_delay": 6.99,
      "typing_delay": 0.339,
      "typing_duration": 7.25,
      "wpm": 91,
      "message": "เป็นเซตว่างนะคะ ซึ่งนักเรียนได้หาจำนวนสมาชิก"
    },
    {
      "message_id": 127,
      "agent_id": 43,
      "delay": 3.329,
      "onscreen_delay": 2.822,
      "typing_delay": 0.507,
      "typing_duration": 13.091,
      "wpm": 54,
      "message": "แล้วนะคะ ก็คือ 0 นั่นเองค่ะ ก็เลยเรียกว่าเซตนี้"
    },
    {
      "message_id": 128,
      "agent_id": 14,
      "delay": 9.09,
      "onscreen_delay": 8.897,
      "typing_delay": 0.193,
      "typing_duration": 5.692,
      "wpm": 37,
      "message": "ว่าเซตจำกัดค่ะ "
    },
    {
      "message_id": 129,
      "agent_id": 33,
      "delay": 5.088,
      "onscreen_delay": 4.266,
      "typing_delay": 0.822,
      "typing_duration": 14.509,
      "wpm": 63,
      "message": "ถัดมานะคะ เราจะเรียกเซตที่ไม่ใช่เซตจำกัดนะคะ เป็นเซตอนันต์ค่ะ "
    },
    {
      "message_id": 130,
      "agent_id": 36,
      "delay": 10.509,
      "onscreen_delay": 9.533,
      "typing_delay": 0.976,
      "typing_duration": 14.888,
      "wpm": 36,
      "message": "ตัวอย่างเช่น เซตแรกนะคะ เซตของ 1,2,3 "
    },
    {
      "message_id": 131,
      "agent_id": 43,
      "delay": 10.886,
      "onscreen_delay": 10.272,
      "typing_delay": 0.614,
      "typing_duration": 12.534,
      "wpm": 65,
      "message": "ไปเรื่อย ๆ ค่ะ นักเรียนจะเห็นว่าไม่สมารถบอกจำนวนสมาชิก"
    },
    {
      "message_id": 132,
      "agent_id": 14,
      "delay": 8.534,
      "onscreen_delay": 8.232,
      "typing_delay": 0.302,
      "typing_duration": 9.887,
      "wpm": 35,
      "message": "ทั้งหมดได้นะคะ เซตของ 1 "
    },
    {
      "message_id": 133,
      "agent_id": 33,
      "delay": 5.886,
      "onscreen_delay": 4.763,
      "typing_delay": 1.123,
      "typing_duration": 15.001,
      "wpm": 39,
      "message": "เศษ 1 ส่าวน 2 เศษ 1 ส่วน 4 เศษ 1 ส่วน 8 "
    },
    {
      "message_id": 134,
      "agent_id": 36,
      "delay": 10.999,
      "onscreen_delay": 10.829,
      "typing_delay": 0.17,
      "typing_duration": 10.187,
      "wpm": 68,
      "message": "ก้ไม่สามารถบอกจำนวนสมาชิกทั้งหมดได้เช่นกันนะคะ "
    },
    {
      "message_id": 135,
      "agent_id": 43,
      "delay": 6.999,
      "onscreen_delay": 5.931,
      "typing_delay": 1.068,
      "typing_duration": 14.077,
      "wpm": 42,
      "message": "รวมถึงเซตของ x ค่ะ ซึ่งเป็นจำนงนเต็มค่ะ "
    },
    {
      "message_id": 136,
      "agent_id": 14,
      "delay": 10.075,
      "onscreen_delay": 7.746,
      "typing_delay": 2.329,
      "typing_duration": 9.35,
      "wpm": 66,
      "message": "ต่อไปเดี๋ยวเรามาดูควาหมายของเอกภพสัมพัทธ์"
    },
    {
      "message_id": 137,
      "agent_id": 33,
      "delay": 6.075,
      "onscreen_delay": 5.212,
      "typing_delay": 0.863,
      "typing_duration": 8.03,
      "wpm": 45,
      "message": "กันค่ะ ในการเขียนเซตนะคะ "
    },
    {
      "message_id": 138,
      "agent_id": 36,
      "delay": 4.029,
      "onscreen_delay": 3.701,
      "typing_delay": 0.328,
      "typing_duration": 12.481,
      "wpm": 52,
      "message": "จะต้องกำหนดเซตที่กำหนดเซดที่บ่งบอกถึงขอบเขต"
    },
    {
      "message_id": 139,
      "agent_id": 43,
      "delay": 8.479,
      "onscreen_delay": 7.872,
      "typing_delay": 0.607,
      "typing_duration": 15.001,
      "wpm": 43,
      "message": "ค่ะ โดยจะเรียกเซตนี้นะคะ ว่า \"เอกภพสัมพัทธ์"
    },
    {
      "message_id": 140,
      "agent_id": 14,
      "delay": 11,
      "onscreen_delay": 9.891,
      "typing_delay": 1.109,
      "typing_duration": 12.91,
      "wpm": 55,
      "message": "โดยเรานะคะ จะเขียนแทนด้วยตัว U ลักษณะแบบนี้นะคะ "
    },
    {
      "message_id": 141,
      "agent_id": 33,
      "delay": 8.91,
      "onscreen_delay": 5.741,
      "typing_delay": 3.169,
      "typing_duration": 9.41,
      "wpm": 43,
      "message": "โดยที่เราจะต้องมีข้อตกลงค่ะ "
    },
    {
      "message_id": 142,
      "agent_id": 36,
      "delay": 5.409,
      "onscreen_delay": 5.205,
      "typing_delay": 0.204,
      "typing_duration": 11.972,
      "wpm": 61,
      "message": "ว่าถ้าเรากล่าวถึงสมาชิกของเซตใด ๆ นะคะ จะไม่กล่าง"
    },
    {
      "message_id": 143,
      "agent_id": 43,
      "delay": 7.971,
      "onscreen_delay": 7.071,
      "typing_delay": 0.9,
      "typing_duration": 13.676,
      "wpm": 33,
      "message": "ถึงสิ่งอื่นนะคะ ที่นอกเหนือจาก"
    },
    {
      "message_id": 144,
      "agent_id": 14,
      "delay": 9.676,
      "onscreen_delay": 9.002,
      "typing_delay": 0.674,
      "typing_duration": 6.275,
      "wpm": 120,
      "message": "เอกภพสัมพัทธ์ค่ะ เดี๋ยวเรามาดูตัวอย่างกันค่ะ กำหนด"
    },
    {
      "message_id": 145,
      "agent_id": 33,
      "delay": 5.675,
      "onscreen_delay": 5.387,
      "typing_delay": 0.288,
      "typing_duration": 12.138,
      "wpm": 48,
      "message": "ให้นะคะ เอกภพสัมพัทธ์คือเซตของจำนวนจริง"
    },
    {
      "message_id": 146,
      "agent_id": 36,
      "delay": 8.136,
      "onscreen_delay": 7.944,
      "typing_delay": 0.192,
      "typing_duration": 15.001,
      "wpm": 42,
      "message": "นะคะ ประกอบไปด้วยสมาชิก x ค่ะ โดยที่ A ประ"
    },
    {
      "message_id": 147,
      "agent_id": 43,
      "delay": 11.001,
      "onscreen_delay": 10.44,
      "typing_delay": 0.561,
      "typing_duration": 12.32,
      "wpm": 33,
      "message": "4 นะคะ และเซต B นะคะ ประกอบ"
    },
    {
      "message_id": 148,
      "agent_id": 14,
      "delay": 8.319,
      "onscreen_delay": 7.856,
      "typing_delay": 0.463,
      "typing_duration": 10.625,
      "wpm": 78,
      "message": "โดยที่ x ยกกำลัง 3 เท่ากับ -1 ค่ะ เดี๋ยวเรามาเขียนเซต A "
    },
    {
      "message_id": 149,
      "agent_id": 33,
      "delay": 6.623,
      "onscreen_delay": 6.252,
      "typing_delay": 0.371,
      "typing_duration": 9.131,
      "wpm": 57,
      "message": "และเซต B นะคะ แบบแจกแจงสมาชิกกันค่ะ "
    },
    {
      "message_id": 150,
      "agent_id": 36,
      "delay": 5.131,
      "onscreen_delay": 3.719,
      "typing_delay": 1.412,
      "typing_duration": 5.533,
      "wpm": 49,
      "message": "เราจะได้เซต A นะคะ "
    },
    {
      "message_id": 151,
      "agent_id": 43,
      "delay": 2.309,
      "onscreen_delay": 0,
      "typing_delay": 2.309,
      "typing_duration": 9.021,
      "wpm": 37,
      "message": "โดยการพิจารณาสมาชิกค่ะ "
    },
    {
      "message_id": 152,
      "agent_id": 14,
      "delay": 5.021,
      "onscreen_delay": 4.507,
      "typing_delay": 0.514,
      "typing_duration": 11.999,
      "wpm": 53,
      "message": "สมาชิกของเซต A นะคะ ต้องเป็นจำนวนยกกำลัง 2 "
    },
    {
      "message_id": 153,
      "agent_id": 33,
      "delay": 7.999,
      "onscreen_delay": 7.683,
      "typing_delay": 0.316,
      "typing_duration": 11.816,
      "wpm": 62,
      "message": "ค่ะ จำนวนอะไรบ้างคะนักเรียนทรราบหรือเปล่า ก็คือ 2 "
    },
    {
      "message_id": 154,
      "agent_id": 36,
      "delay": 7.814,
      "onscreen_delay": 7.628,
      "typing_delay": 0.186,
      "typing_duration": 11.851,
      "wpm": 68,
      "message": "และ -2 นะคะ เมื่อเรานำ 2 และ -2 มาพิจารณานะคะ จะได้ว่า "
    },
    {
      "message_id": 155,
      "agent_id": 43,
      "delay": 7.851,
      "onscreen_delay": 7.136,
      "typing_delay": 0.715,
      "typing_duration": 14.699,
      "wpm": 43,
      "message": "2 และ -2 เป็นจำนวนจริงนะคะ เพราะฉะนั้นแล้ว "
    },
    {
      "message_id": 156,
      "agent_id": 14,
      "delay": 10.698,
      "onscreen_delay": 10.426,
      "typing_delay": 0.272,
      "typing_duration": 5.324,
      "wpm": 51,
      "message": "ก็คือ 2 และ -2 ค่ะ "
    },
    {
      "message_id": 157,
      "agent_id": 33,
      "delay": 6.697,
      "onscreen_delay": 5.756,
      "typing_delay": 0.941,
      "typing_duration": 4.096,
      "wpm": 33,
      "message": "ถัดมานะคะ "
    },
    {
      "message_id": 158,
      "agent_id": 36,
      "delay": 2.696,
      "onscreen_delay": 1.745,
      "typing_delay": 0.951,
      "typing_duration": 15.001,
      "wpm": 50,
      "message": "นักเรียนจะเห็นว่านะคะ จำนวนที่ยกกำลัง 3 นะคะ เท่าำ"
    },
    {
      "message_id": 159,
      "agent_id": 43,
      "delay": 11.001,
      "onscreen_delay": 10.125,
      "typing_delay": 0.876,
      "typing_duration": 11.209,
      "wpm": 47,
      "message": "-1 นะคะ ก็คือ -1 นั่นเองค่ะ แล้ว -1 "
    },
    {
      "message_id": 160,
      "agent_id": 14,
      "delay": 7.207,
      "onscreen_delay": 6.86,
      "typing_delay": 0.347,
      "typing_duration": 12.403,
      "wpm": 67,
      "message": "ก็เป็นจำนวนจริงค่ะ เพราะฉะนั้น เซต B นะคะ มีจำนวนสมาชิก "
    },
    {
      "message_id": 161,
      "agent_id": 33,
      "delay": 8.402,
      "onscreen_delay": 7.672,
      "typing_delay": 0.73,
      "typing_duration": 4.392,
      "wpm": 34,
      "message": "คือ -1 ค่ะ "
    },
    {
      "message_id": 162,
      "agent_id": 36,
      "delay": 4.401,
      "onscreen_delay": 2.814,
      "typing_delay": 1.587,
      "typing_duration": 8.364,
      "wpm": 74,
      "message": "ถัดมาทางด้านขวานะคะ กำหนดให้เอกภพสัมพัทธ์"
    },
    {
      "message_id": 163,
      "agent_id": 43,
      "delay": 4.363,
      "onscreen_delay": 3.127,
      "typing_delay": 1.236,
      "typing_duration": 11.317,
      "wpm": 44,
      "message": "ค่ะ คือ เซตของจำนวนเต็มบวกค่ะ โดย"
    },
    {
      "message_id": 164,
      "agent_id": 14,
      "delay": 7.317,
      "onscreen_delay": 7.141,
      "typing_delay": 0.176,
      "typing_duration": 10.975,
      "wpm": 52,
      "message": "เซตของ A ประกอบไปด้วยสมาชิก x โดยที่ x "
    },
    {
      "message_id": 165,
      "agent_id": 33,
      "delay": 6.974,
      "onscreen_delay": 6.696,
      "typing_delay": 0.278,
      "typing_duration": 13.982,
      "wpm": 58,
      "message": "เท่ากับ 4 นะคะ และเซต B นะคะ ปีระกอบไปด้วยสมาชิก x ค่ะ "
    },
    {
      "message_id": 166,
      "agent_id": 36,
      "delay": 9.982,
      "onscreen_delay": 9.525,
      "typing_delay": 0.457,
      "typing_duration": 9.307,
      "wpm": 44,
      "message": "โดยที่ x ยกกำลัง 3 = -1 ค่ะ "
    },
    {
      "message_id": 167,
      "agent_id": 43,
      "delay": 5.981,
      "onscreen_delay": 4.876,
      "typing_delay": 1.105,
      "typing_duration": 11.883,
      "wpm": 52,
      "message": "นักเรียนจะเห็นว่าทางด้านซ้ายและขวามือนะคะ "
    },
    {
      "message_id": 168,
      "agent_id": 14,
      "delay": 7.883,
      "onscreen_delay": 7.69,
      "typing_delay": 0.193,
      "typing_duration": 7.27,
      "wpm": 107,
      "message": "เซต A และเซต B เหมือนกันนะคะ ต่างกันที่เอกภพสัมพัทธ์"
    },
    {
      "message_id": 169,
      "agent_id": 33,
      "delay": 3.883,
      "onscreen_delay": 3.423,
      "typing_delay": 0.46,
      "typing_duration": 11.26,
      "wpm": 73,
      "message": "ค่ะ เดี๋ยวเรามาดูกันดีกว่านะคะ ว่าการกำหนดเอกภพสัมพัทธ์"
    },
    {
      "message_id": 170,
      "agent_id": 36,
      "delay": 7.26,
      "onscreen_delay": 7.044,
      "typing_delay": 0.216,
      "typing_duration": 12.849,
      "wpm": 65,
      "message": "เป็นเซตของจำนวนเต็มบวกนะคะ จะได้สมาชิกของเซต A และ เซต B "
    },
    {
      "message_id": 171,
      "agent_id": 43,
      "delay": 8.848,
      "onscreen_delay": 8.576,
      "typing_delay": 0.272,
      "typing_duration": 13.596,
      "wpm": 31,
      "message": "เป็นอะไรบ้างค่ะ เรามาดูเซต A "
    },
    {
      "message_id": 172,
      "agent_id": 14,
      "delay": 9.595,
      "onscreen_delay": 8.556,
      "typing_delay": 1.039,
      "typing_duration": 9.175,
      "wpm": 74,
      "message": "กันก่อนนะคะ เมื่อสักครู่นี้นะคะ นักเรียนได้หา"
    },
    {
      "message_id": 173,
      "agent_id": 33,
      "delay": 5.594,
      "onscreen_delay": 5.272,
      "typing_delay": 0.322,
      "typing_duration": 13.744,
      "wpm": 62,
      "message": "ไปแล้วใช่ไหมคะ จำนวนที่ยกกำลัง 2 เท่ากับ 4 ก็คือ 2 กับ -2 "
    },
    {
      "message_id": 174,
      "agent_id": 36,
      "delay": 9.742,
      "onscreen_delay": 9.606,
      "typing_delay": 0.136,
      "typing_duration": 14.441,
      "wpm": 34,
      "message": "นะคะ แต่เราเมื่อพิจารณาดูแล้วนะคะ "
    },
    {
      "message_id": 175,
      "agent_id": 43,
      "delay": 10.441,
      "onscreen_delay": 10.005,
      "typing_delay": 0.436,
      "typing_duration": 13.933,
      "wpm": 31,
      "message": "เต็มบวกค่ะ สมาชิกของ A เป็น 2 "
    },
    {
      "message_id": 176,
      "agent_id": 14,
      "delay": 9.933,
      "onscreen_delay": 9.791,
      "typing_delay": 0.142,
      "typing_duration": 4.522,
      "wpm": 36,
      "message": "เท่านั้นค่ะ "
    },
    {
      "message_id": 177,
      "agent_id": 33,
      "delay": 5.932,
      "onscreen_delay": 5.711,
      "typing_delay": 0.221,
      "typing_duration": 14.365,
      "wpm": 70,
      "message": "ที่ B กันต่อค่ะ เมื่อสักครู่นะคะ นักเรียนก็ได้หาไปแล้วนะคะ จำนวนที่"
    },
    {
      "message_id": 178,
      "agent_id": 36,
      "delay": 10.364,
      "onscreen_delay": 10.09,
      "typing_delay": 0.274,
      "typing_duration": 9.862,
      "wpm": 37,
      "message": "ยกกำลัง 3 แล้วเท่ากับ -1 "
    },
    {
      "message_id": 179,
      "agent_id": 43,
      "delay": 6.363,
      "onscreen_delay": 5.855,
      "typing_delay": 0.508,
      "typing_duration": 12.435,
      "wpm": 55,
      "message": "ก็ไม่ใช่จำนวนเต็มบวกเช่นกันค่ะ เพราะฉะนั้นแล้ว "
    },
    {
      "message_id": 180,
      "agent_id": 14,
      "delay": 8.435,
      "onscreen_delay": 8.261,
      "typing_delay": 0.174,
      "typing_duration": 4.938,
      "wpm": 85,
      "message": "เซต B นะคะ จึงเป็นเซตว่างค่ะ "
    },
    {
      "message_id": 181,
      "agent_id": 33,
      "delay": 4.434,
      "onscreen_delay": 0.567,
      "typing_delay": 3.867,
      "typing_duration": 8.602,
      "wpm": 30,
      "message": "นักเรียนจพเห็นว่า"
    },
    {
      "message_id": 182,
      "agent_id": 36,
      "delay": 4.601,
      "onscreen_delay": 4.295,
      "typing_delay": 0.306,
      "typing_duration": 10.879,
      "wpm": 50,
      "message": "ในบางครั้งนะคะ การกำหนดเอกภพสัมพัทธ์"
    },
    {
      "message_id": 183,
      "agent_id": 43,
      "delay": 6.877,
      "onscreen_delay": 6.287,
      "typing_delay": 0.59,
      "typing_duration": 8.23,
      "wpm": 62,
      "message": "สมาชิกของเซตนะคะ แตกต่างกันด้วยค่ะ "
    },
    {
      "message_id": 184,
      "agent_id": 14,
      "delay": 4.23,
      "onscreen_delay": 4.069,
      "typing_delay": 0.161,
      "typing_duration": 10.817,
      "wpm": 79,
      "message": "เพราะฉะนั้นแล้วนะคะ นักเรียนควรระมัดระวัง การเขียนเซตต้อง"
    },
    {
      "message_id": 185,
      "agent_id": 33,
      "delay": 6.817,
      "onscreen_delay": 6.266,
      "typing_delay": 0.551,
      "typing_duration": 13.863,
      "wpm": 53,
      "message": "ตรวจสอบนะคะเอกภพสัมพัทธ์ก่อนค่ะ ดังนั้น เราจะระบุ"
    },
    {
      "message_id": 186,
      "agent_id": 36,
      "delay": 9.861,
      "onscreen_delay": 9.002,
      "typing_delay": 0.859,
      "typing_duration": 13.931,
      "wpm": 53,
      "message": "เอกภพสัมพัทธ์ดังนี้ค่ะ โดยให้เซต N นะคะ แทนเซตของ"
    },
    {
      "message_id": 187,
      "agent_id": 43,
      "delay": 9.93,
      "onscreen_delay": 8.983,
      "typing_delay": 0.947,
      "typing_duration": 10.196,
      "wpm": 37,
      "message": "จำนวนนับค่ะ เซตของ Z นะคะ "
    },
    {
      "message_id": 188,
      "agent_id": 14,
      "delay": 6.196,
      "onscreen_delay": 5.271,
      "typing_delay": 0.925,
      "typing_duration": 9.997,
      "wpm": 45,
      "message": "แทนเซตของจำนวนเต็มค่ะ เซตของ Q "
    },
    {
      "message_id": 189,
      "agent_id": 33,
      "delay": 5.996,
      "onscreen_delay": 5.352,
      "typing_delay": 0.644,
      "typing_duration": 13.178,
      "wpm": 41,
      "message": "นะคะ แทนเซตของจำนวนตรรกยะค่ะ Q prime "
    },
    {
      "message_id": 190,
      "agent_id": 36,
      "delay": 9.177,
      "onscreen_delay": 8.881,
      "typing_delay": 0.296,
      "typing_duration": 7.352,
      "wpm": 59,
      "message": "นะคะ แทนเซตของจำนวนอตรรกยะค่ะ "
    },
    {
      "message_id": 191,
      "agent_id": 43,
      "delay": 5.175,
      "onscreen_delay": 4.558,
      "typing_delay": 0.617,
      "typing_duration": 8.833,
      "wpm": 46,
      "message": "และ R แทนเซตของจำนวนจริงค่ะ "
    },
    {
      "message_id": 192,
      "agent_id": 14,
      "delay": 4.832,
      "onscreen_delay": 3.654,
      "typing_delay": 1.178,
      "typing_duration": 9.143,
      "wpm": 71,
      "message": "ในบางครั้งนะคะ เพื่อความสะดวกนะคะ เราจะระบุ"
    },
    {
      "message_id": 193,
      "agent_id": 33,
      "delay": 5.142,
      "onscreen_delay": 4.808,
      "typing_delay": 0.334,
      "typing_duration": 13.294,
      "wpm": 58,
      "message": "เอกภพสัมพัทธ์นะคะ แทนลงการเขียนเซตแบบบอกเงื่อนไขค่ะ "
    },
    {
      "message_id": 194,
      "agent_id": 36,
      "delay": 9.293,
      "onscreen_delay": 8.362,
      "typing_delay": 0.931,
      "typing_duration": 12.627,
      "wpm": 55,
      "message": "ตัวอย่างนะคะ ให้เซต A ประกอบไปด้วยสมาชิก x ค่ะ "
    },
    {
      "message_id": 195,
      "agent_id": 43,
      "delay": 8.625,
      "onscreen_delay": 7.855,
      "typing_delay": 0.77,
      "typing_duration": 13.628,
      "wpm": 35,
      "message": "ซึ่งเป็นสมาชิกของ N ค่ะ โดยที่ N "
    },
    {
      "message_id": 196,
      "agent_id": 14,
      "delay": 9.628,
      "onscreen_delay": 9.421,
      "typing_delay": 0.207,
      "typing_duration": 6.341,
      "wpm": 102,
      "message": "เท่ากับ 4 ค่ะ นักเรียนจะเห็นว่าในเซตนี้นะคะ "
    },
    {
      "message_id": 197,
      "agent_id": 33,
      "delay": 5.627,
      "onscreen_delay": 5.282,
      "typing_delay": 0.345,
      "typing_duration": 13.858,
      "wpm": 52,
      "message": "มีการระบุเอกภพสัมพัทธ์นะคะ ลงไปด้านหลังตัวแปรค่ะ "
    },
    {
      "message_id": 198,
      "agent_id": 36,
      "delay": 9.858,
      "onscreen_delay": 7.634,
      "typing_delay": 2.224,
      "typing_duration": 10.28,
      "wpm": 48,
      "message": "ซึ่งในที่นี้นะคะ เซตของ N เท่ากับ"
    },
    {
      "message_id": 199,
      "agent_id": 43,
      "delay": 6.278,
      "onscreen_delay": 5.903,
      "typing_delay": 0.375,
      "typing_duration": 14.628,
      "wpm": 41,
      "message": "จำนวนนับนั้นเองค่ะ เดี๋ยวเรามาหาจำนวนของ "
    },
    {
      "message_id": 200,
      "agent_id": 14,
      "delay": 10.627,
      "onscreen_delay": 6.313,
      "typing_delay": 4.314,
      "typing_duration": 4.314,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 201,
      "agent_id": 33,
      "delay": 6.627,
      "onscreen_delay": 5.525,
      "typing_delay": 1.102,
      "typing_duration": 12.222,
      "wpm": 48,
      "message": "จำนวนที่ยกกำลัง 2 นะคะ แล้ว = 4 ก็คือ 2 "
    },
    {
      "message_id": 202,
      "agent_id": 36,
      "delay": 8.221,
      "onscreen_delay": 8.121,
      "typing_delay": 0.1,
      "typing_duration": 11.349,
      "wpm": 66,
      "message": "และ - 2 นะคะ แต่เนื่องจากเราต้องการแค่จำนวนนับนะคะ "
    },
    {
      "message_id": 203,
      "agent_id": 43,
      "delay": 7.347,
      "onscreen_delay": 6.592,
      "typing_delay": 0.755,
      "typing_duration": 13.628,
      "wpm": 50,
      "message": "เพราะฉะนั้นแล้ว สมาชิกของเซต มีเพียงแค่ 2 ค่ะ "
    },
    {
      "message_id": 204,
      "agent_id": 14,
      "delay": 9.628,
      "onscreen_delay": 7.163,
      "typing_delay": 2.465,
      "typing_duration": 6.255,
      "wpm": 41,
      "message": "ถัดมาที่เซต B ค่ะ "
    },
    {
      "message_id": 205,
      "agent_id": 33,
      "delay": 5.627,
      "onscreen_delay": 5.328,
      "typing_delay": 0.299,
      "typing_duration": 13.986,
      "wpm": 51,
      "message": "ประกอบไปด้วยสมาชิก x นะคะ โดยเป็นสมาชิกของ Z ค่ะ "
    },
    {
      "message_id": 206,
      "agent_id": 36,
      "delay": 9.986,
      "onscreen_delay": 9.808,
      "typing_delay": 0.178,
      "typing_duration": 10.186,
      "wpm": 77,
      "message": "ยกกำลัง 2 เท่ากับ 4 นะคะ นักเรียนจะเห็นว่าเซตนี้นะคะ "
    },
    {
      "message_id": 207,
      "agent_id": 43,
      "delay": 6.186,
      "onscreen_delay": 5.839,
      "typing_delay": 0.347,
      "typing_duration": 12.324,
      "wpm": 52,
      "message": "ก็ระบุเอกภพสัมพัทธ์ คือ Z ซึ่งเป็นจำนวนเต็ม"
    },
    {
      "message_id": 208,
      "agent_id": 14,
      "delay": 8.323,
      "onscreen_delay": 7.718,
      "typing_delay": 0.605,
      "typing_duration": 7.235,
      "wpm": 85,
      "message": "ลงไปด้วยค่ะ ซึ่งเมื่อเราระบุเอกภพสัมพัทธ์"
    },
    {
      "message_id": 209,
      "agent_id": 33,
      "delay": 4.321,
      "onscreen_delay": 4.034,
      "typing_delay": 0.287,
      "typing_duration": 14.48,
      "wpm": 50,
      "message": "นะคะ เป็นตจำวนวเต็มแล้วนะคะ สมาชิกของ B ในที่นี้"
    },
    {
      "message_id": 210,
      "agent_id": 36,
      "delay": 10.48,
      "onscreen_delay": 10.002,
      "typing_delay": 0.478,
      "typing_duration": 6.327,
      "wpm": 64,
      "message": "จึงสามารถเป็น -2 ได้ด้วยค่ะ "
    },
    {
      "message_id": 211,
      "agent_id": 43,
      "delay": 6.479,
      "onscreen_delay": 5.976,
      "typing_delay": 0.503,
      "typing_duration": 5,
      "wpm": 27,
      "message": "แบบนี้ค่ะ "
    },
    {
      "message_id": 212,
      "agent_id": 14,
      "delay": 2.478,
      "onscreen_delay": 1.923,
      "typing_delay": 0.555,
      "typing_duration": 8.52,
      "wpm": 90,
      "message": "ถ้าเรานะคะ ไม่ได้กำหนดว่าเซตใดเป็นเอกภพสัมพัทธ์นะคะ "
    },
    {
      "message_id": 213,
      "agent_id": 33,
      "delay": 4.518,
      "onscreen_delay": 4.226,
      "typing_delay": 0.292,
      "typing_duration": 12.754,
      "wpm": 61,
      "message": "ในระดับนี้นะคะ เราจะถือว่าเซตในเอกภพสัมพัทธ์ค่ะ เป็น"
    },
    {
      "message_id": 214,
      "agent_id": 36,
      "delay": 8.753,
      "onscreen_delay": 8.4,
      "typing_delay": 0.353,
      "typing_duration": 7.362,
      "wpm": 61,
      "message": "จำนวนจริงนะคะ ต่อไปเดี๋ยวเรามา"
    },
    {
      "message_id": 215,
      "agent_id": 43,
      "delay": 4.752,
      "onscreen_delay": 3.891,
      "typing_delay": 0.861,
      "typing_duration": 8.123,
      "wpm": 44,
      "message": "ทบทวบบทเรียนกันดีกว่าค่ะ "
    },
    {
      "message_id": 216,
      "agent_id": 14,
      "delay": 4.122,
      "onscreen_delay": 3.909,
      "typing_delay": 0.213,
      "typing_duration": 12.624,
      "wpm": 65,
      "message": "บทเรียนในวันนี้นะคะ เราพูดถึงเซตว่างค่ะ เซตว่าง คือ เซต"
    },
    {
      "message_id": 217,
      "agent_id": 33,
      "delay": 8.623,
      "onscreen_delay": 8.143,
      "typing_delay": 0.48,
      "typing_duration": 13.487,
      "wpm": 52,
      "message": "ไม่มีสมาชิกนะคะ โดยจะเขียนแทนด้วยสัญลักษณ์ปีกกา"
    },
    {
      "message_id": 218,
      "agent_id": 36,
      "delay": 9.487,
      "onscreen_delay": 9.224,
      "typing_delay": 0.263,
      "typing_duration": 5.239,
      "wpm": 77,
      "message": "หรือไม่ก็เป็นวงกลมขีดทับค่ะ "
    },
    {
      "message_id": 219,
      "agent_id": 43,
      "delay": 5.487,
      "onscreen_delay": 4.568,
      "typing_delay": 0.919,
      "typing_duration": 11.729,
      "wpm": 51,
      "message": "และก็เซตที่มีจำนวนสมาชิกนะคะ มีจำนวนใด ๆ "
    },
    {
      "message_id": 220,
      "agent_id": 14,
      "delay": 7.728,
      "onscreen_delay": 7.348,
      "typing_delay": 0.38,
      "typing_duration": 10.402,
      "wpm": 52,
      "message": "หรือ 0 นะคะ เราจะเรียกว่า \"เซตจำกัด\" "
    },
    {
      "message_id": 221,
      "agent_id": 33,
      "delay": 6.402,
      "onscreen_delay": 5.668,
      "typing_delay": 0.734,
      "typing_duration": 14.999,
      "wpm": 57,
      "message": "และเซตที่ไม่ใช่เซตจำกัดนะคะ เราจะเรียกว่า \"เซตอนันต์\" ค่ะ"
    },
    {
      "message_id": 222,
      "agent_id": 36,
      "delay": 10.998,
      "onscreen_delay": 9.489,
      "typing_delay": 1.509,
      "typing_duration": 13.236,
      "wpm": 52,
      "message": "ถัดมานะคะ ในการเขียนเซตจะต้องกำหนดเซตที่บ่งบอก"
    },
    {
      "message_id": 223,
      "agent_id": 43,
      "delay": 9.235,
      "onscreen_delay": 8.589,
      "typing_delay": 0.646,
      "typing_duration": 11.774,
      "wpm": 29,
      "message": "ถึงขอบเเบตของการพิจารณา"
    },
    {
      "message_id": 224,
      "agent_id": 14,
      "delay": 7.772,
      "onscreen_delay": 7.421,
      "typing_delay": 0.351,
      "typing_duration": 10.154,
      "wpm": 78,
      "message": "นะคะ ว่า \"เอกภพสัมพัทธ์\" ซึ่งจะเขียนแทนด้วยตัว U นะคะ "
    },
    {
      "message_id": 225,
      "agent_id": 33,
      "delay": 6.154,
      "onscreen_delay": 5.265,
      "typing_delay": 0.889,
      "typing_duration": 12.92,
      "wpm": 63,
      "message": "แล้วก็เอกภพสัมพัทธ์ที่เราจะพบบ่อยนะคะ ก็คือ N ค่ะ เป็น"
    },
    {
      "message_id": 226,
      "agent_id": 36,
      "delay": 8.92,
      "onscreen_delay": 8.74,
      "typing_delay": 0.18,
      "typing_duration": 14.107,
      "wpm": 35,
      "message": "จำนวนนับนะคะ Z แทนเซตของจำนวนเต็ม "
    },
    {
      "message_id": 227,
      "agent_id": 43,
      "delay": 10.106,
      "onscreen_delay": 9.751,
      "typing_delay": 0.355,
      "typing_duration": 13.099,
      "wpm": 33,
      "message": "ของจำนวนตรรกยะ Q แทนเซตของ... "
    },
    {
      "message_id": 228,
      "agent_id": 14,
      "delay": 9.097,
      "onscreen_delay": 8.322,
      "typing_delay": 0.775,
      "typing_duration": 8.662,
      "wpm": 47,
      "message": "และ R แทนเซตของจำนวนจริงค่ะ "
    },
    {
      "message_id": 229,
      "agent_id": 33,
      "delay": 5.097,
      "onscreen_delay": 4.067,
      "typing_delay": 1.03,
      "typing_duration": 4.101,
      "wpm": 44,
      "message": "[เสียงดนตรี]"
    },
    {
      "message_id": 230,
      "agent_id": 36,
      "delay": 15.001,
      "onscreen_delay": 0,
      "typing_delay": 15.001,
      "typing_duration": 15.001,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 231,
      "agent_id": 43,
      "delay": 11,
      "onscreen_delay": 4.705,
      "typing_delay": 6.295,
      "typing_duration": 6.295,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 232,
      "agent_id": 14,
      "delay": 15.002,
      "onscreen_delay": 0,
      "typing_delay": 15.002,
      "typing_duration": 15.002,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 233,
      "agent_id": 33,
      "delay": 15.004,
      "onscreen_delay": 0,
      "typing_delay": 15.004,
      "typing_duration": 15.004,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 234,
      "agent_id": 36,
      "delay": 15.003,
      "onscreen_delay": 0,
      "typing_delay": 15.003,
      "typing_duration": 15.003,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 235,
      "agent_id": 43,
      "delay": 11.001,
      "onscreen_delay": 0,
      "typing_delay": 11.001,
      "typing_duration": 11.001,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 236,
      "agent_id": 33,
      "delay": 7,
      "onscreen_delay": 0,
      "typing_delay": 7,
      "typing_duration": 7,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 237,
      "agent_id": 36,
      "delay": 3,
      "onscreen_delay": 0,
      "typing_delay": 3,
      "typing_duration": 3,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 238,
      "agent_id": 43,
      "delay": 3.002,
      "onscreen_delay": 0,
      "typing_delay": 3.002,
      "typing_duration": 3.002,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 239,
      "agent_id": 36,
      "delay": 3.003,
      "onscreen_delay": 0,
      "typing_delay": 3.003,
      "typing_duration": 3.003,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 240,
      "agent_id": 36,
      "delay": 3.002,
      "onscreen_delay": 0,
      "typing_delay": 3.002,
      "typing_duration": 3.002,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 241,
      "agent_id": 36,
      "delay": 3.003,
      "onscreen_delay": 0,
      "typing_delay": 3.003,
      "typing_duration": 3.003,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 242,
      "agent_id": 36,
      "delay": 3.004,
      "onscreen_delay": 0,
      "typing_delay": 3.004,
      "typing_duration": 3.004,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 243,
      "agent_id": 36,
      "delay": 3.002,
      "onscreen_delay": 0,
      "typing_delay": 3.002,
      "typing_duration": 3.002,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 244,
      "agent_id": 36,
      "delay": 3.001,
      "onscreen_delay": 0,
      "typing_delay": 3.001,
      "typing_duration": 3.001,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 245,
      "agent_id": 36,
      "delay": 3.001,
      "onscreen_delay": 0,
      "typing_delay": 3.001,
      "typing_duration": 3.001,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 246,
      "agent_id": 36,
      "delay": 3.002,
      "onscreen_delay": 0,
      "typing_delay": 3.002,
      "typing_duration": 3.002,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 247,
      "agent_id": 36,
      "delay": 3.003,
      "onscreen_delay": 0,
      "typing_delay": 3.003,
      "typing_duration": 3.003,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 248,
      "agent_id": 36,
      "delay": 3.004,
      "onscreen_delay": 0,
      "typing_delay": 3.004,
      "typing_duration": 3.004,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 249,
      "agent_id": 36,
      "delay": 3.002,
      "onscreen_delay": 0,
      "typing_delay": 3.002,
      "typing_duration": 3.002,
      "wpm": 0,
      "message": ""
    },
    {
      "message_id": 250,
      "agent_id": 36,
      "delay": 3.002,
      "onscreen_delay": 0,
      "typing_delay": 3.002,
      "typing_duration": 3.002,
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