You can see the Study Time for each user by following the steps below.
1. On Home screen, select "Confirm attend history" and click "Card Unit Detail" from "By Student" pull down menu.
2. On "By card unit detail of the student" page, click "Export History" and download a CSV file.
3. You can see the Total Length of Study Time in horizontal axis on the file.
In case "Length of Studying Time" for a card is over one hour, the rows of "Star Date/Time of Studying" "End Date/Time of Studying" "Length of Studying Time" will get blank.