From eScan Wiki
Data Usage
The Data Usage module lets you keep a track of cellular data usage of a device.
Date
This column displays the date for which the details are recorded.
Mobile No .
This column displays the mobile number of the device.
Username
This column displays the username of the managed device.
Group
This column displays the group to which the particular managed device belongs.
Data Usage
This column displays the amount of mobile data consumed by the managed device.