Front yard started showing very low water usage - No Flow Meter

I downloaded the usage data (please make longer / please add the same for flow meter) and until 12/23/2018 the flow rates were around 200 gallons for half an hour. Then after its 0 gallons for half an hour and sometimes 3.49 gallons for 0.6 hours and then a few days later 1.56 gallons for 0.8 hours. I don’t have a flow meter for the front yard so why is the water usage all over the place and much too low? I don’t think I changed anything.

Bump.

Where are you getting this information from?