I think the pressure and or flow rate is higher at different time of day but I’ve had the meter for a while and this week it says two of the three zones had high flow. I had just recalibrated and the other odd thing is that the rate for both was exactly the same as the threshold. Bug of some kind?
Should I get up at 4:30am to recalibrate? 
A little historical data of flow rates over time could be handy.
Section 1
We detected a flow rate of 13.4 gpm, which is above your set threshold of 13.4 gpm.
Section 2
We detected a flow rate of 12.5 gpm, which is above your set threshold of 12.5 gpm.