In the zone settings, the app offers different types of watering, for example, regular, deep watering, boost, etc. One is labeled EPA. 

What are the differences between the settings and watering times/amounts for: regular, boost, and EPA?

Hello - I have a 9 zone system. I have set all of the zones with the exact same settings for type, grass, etc. I do not have any sensors. 

However, the app shows the zones having different moisture levels, and waters certain zones differently than others, even though the settings and system location are the exact same. 

Can you help me understand why the system would treat these identically programmed zones differently

Thanks!