Test invoke API can return suite information for suites executed by time period. Refer to section "Test Invoke API", in the documentation of the version of DevTest being run.
Of these counts:
These counts are passed/aborted/failed tests in Suites that were executed.
To get statistics about how many suites were executed, "http://localhost:1505/lisa-test-invoke/api/v1/suites/reports?startTime=2018-09-11T00:00:00-0700&endTime=2018-09-26T16:33:00-0000"
In the report there is "count" field with the total suites number.
Will see the Workstation column if the reports were executed from the Workstation.
Will see a DevTest Portal column if executing from DevTest Portal.
Regression runner should show if executing from Jenkins. Regression Runner column only shows up if a report was run from a user with a role of Runtime User.