Hi @forza1976 (and @gobeavs03), sorry for the delay.
I did some digging on your nozzles.
Below are the listed precip rates for each nozzle for zones 1 and 2:
Pro 10A – 1.89 in/hour to 2.18 in/hour
Rainbird 4VAN x2 – 4.93 in/hour to 11.86 in/hour
Rainbird 80 – need more info or photo of head and nozzle.
Rainbird 120 – need more info or photo of head and nozzle.
Rainbird 12H – 1.74 in/hour to 2.47 in/hour
Rainbird 15VAN – 1.58 in/hour to 2.39 in/hour
As you can see, the precip rates can vary greatly from one nozzle to another. Chane you have multiple heads on each zone, I think the best way to get an accurate reading would be to do a catch cup test, then create a custom nozzle with the data collected. We can certainly attempt to find the average precip rate of the nozzles listed, but this doesn’t take into effect your system’s pressure, flow rate, or distribution uniformity – all of which play a key role in how accurate your Iro’s reporting and watering schedules will be.
As for your zone square footage updates
If you haven’t yet created a new watering time since saving this updates, I’d recommend doing so as the watering times are static to the original zone settings and do not dynamically adjust.
I hope this helps shed some light into the calibration possibilities of your zones. It’s always recommended to calibrate the Iro with the best data possible for the algorithms to work better. That said, once you have a chance to double check your nozzle output, I’d recommend getting (or borrowing) a soil probe to take a few measurements of your root zone depths as well.
Hope this helps. Happy to provide more feedback and/or answer additional questions if you have any.