Ledger uses Cobalt to record field data.
In order to add more events:
In order to view the recorded data, run:
cd garnet/bin/cobalt ./download_report_client.py ./report_client -project_id=100
report_client hints to extract the data. For example, run the following to extract Ledger event counters from the last 5 days:
Command or 'help': run range -4 0 2