Netro estimates the flow rate based on the sprinkler type and here are some typical flow rate:
MISTER: 2 inch/hour
FIX_SPRAY_HEAD: 1.5 inch/hour
BUBBLER/ROTOR_HEAD: 1.0 inch/hour
ROTARY_NOZZLE: 0.7 inch/hour
ROTARY_EMITTER: 0.5 inch/hour
If it is not accurate, you can adjust the flow rate though customized mode. Please go settings->zones->specific zone number->smart zone-enabled->Mode.