timestamp,action_type,item_id,source,user_answer,platform
1562585090385,enter,b4087,diagnosis,,mobile
1562585104567,respond,q5555,diagnosis,d,mobile
1562585111171,submit,b4087,diagnosis,,mobile
1562585111221,enter,b3604,diagnosis,,mobile
1562585116513,respond,q5072,diagnosis,b,mobile
1562585120722,submit,b3604,diagnosis,,mobile
1562585120756,enter,b2165,diagnosis,,mobile
1562585131504,respond,q3633,diagnosis,c,mobile
1562585135760,submit,b2165,diagnosis,,mobile
1562585135827,enter,b2964,diagnosis,,mobile
1562585144234,respond,q4432,diagnosis,a,mobile
1562585148185,submit,b2964,diagnosis,,mobile
1562585148270,enter,b297,diagnosis,,mobile
1562585166142,respond,q297,diagnosis,a,mobile
1562585170163,submit,b297,diagnosis,,mobile
1562585170227,enter,b2718,diagnosis,,mobile
1562585173668,respond,q4186,diagnosis,c,mobile
1562585176927,submit,b2718,diagnosis,,mobile
1562585176996,enter,b4337,diagnosis,,mobile
1562585202317,respond,q5805,diagnosis,a,mobile
1562585205978,submit,b4337,diagnosis,,mobile
1562585206014,enter,b760,diagnosis,,mobile
1562585222105,respond,q760,diagnosis,c,mobile
1562585226454,submit,b760,diagnosis,,mobile
1562587497612,enter,b803,tutor,,mobile
1562587546766,respond,q803,tutor,a,mobile
1562587550272,submit,b803,tutor,,mobile
1562587550365,enter,e803,tutor,,mobile
1562587555290,quit,e803,tutor,,mobile
1562587555543,enter,l468,tutor,,mobile
1562587577415,quit,l468,tutor,,mobile
1562587583694,enter,b3405,tutor,,mobile
1562587587435,respond,q4873,tutor,c,mobile
1562587590717,submit,b3405,tutor,,mobile
1562587590778,enter,e3405,tutor,,mobile
1562587594595,quit,e3405,tutor,,mobile
1562587608626,enter,b5697,tutor,,mobile
1562587707700,respond,q8282,tutor,b,mobile
1562587708842,respond,q8282,tutor,d,mobile
1562587713124,submit,b5697,tutor,,mobile
1562587713192,enter,e5697,tutor,,mobile
1562587719483,quit,e5697,tutor,,mobile
1562587725546,enter,b1463,tutor,,mobile
1562587811733,respond,q1587,tutor,d,mobile
1562587812495,respond,q1587,tutor,d,mobile
1562587816581,submit,b1463,tutor,,mobile
1562587816661,enter,e1463,tutor,,mobile
1562587832786,quit,e1463,tutor,,mobile