App Disk Space Usage API

I'm reading this documentation for this API and does anyone know what the units are for the Data Size and Binary Size fields in the Report? I've looked at this data as Megabytes and Gigabytes but it doesn't seem to make any sense compared to the build size data in Test Flight for my apps.

https://developer.apple.com/documentation/analytics-reports/app-disk-space-usage

Thanks!

App Disk Space Usage API
 
 
Q