Exported Excel Sheet Data in School Data Sync Insights in Teams - Education Insights Premium

According to the documentation on the Microsoft Learn website https://learn.microsoft.com/en-us/schooldatasync/insights-in-teams-csv-export-format https://learn.microsoft.com/en-us/schooldatasync/insights-in-teams-csv-export-format)

Furthermore, we would like to clarify the specific meaning of the data in the "Time spent in meeting" column. Does this column represent the duration of online meetings created on the Class Teams platform or the duration of calls between the students?

We would greatly appreciate it if you could provide us with more information regarding the expected data in the exported Excel Sheet for the whole organization or specific school. Additionally, any clarification on the interpretation of the "Time spent in meeting" column would be extremely helpful.