@davidj5684, Good question. Taking a look at Rainbird's website, the 5000 series head has a precipitation rate that can vary from 0.20 to 1.01 inches per hour (5 to 26 mm/h). Therefore, we need to understand what the precip rate is for the entire zone, which is best calculated using catch cups.
@cfagyal is spot on! For more information, please see this support article on calculating precipitation rates.
We appreciate this idea and have it in our backog for future consideration. Catch cups should allow you to accurately find the precip rate for your mixed zones. Please let me know if you're having difficultly with this and we'd be happy to help.
Soon! We're finishing up testing of flex schedules now.
Currently we will adjust your schedule once a week by increasing or decreasing your watering times for changes in ET (assuming you have the Water Budgeting feature enabled). With Flex schedules, we will adjust your watering frequency, but keep watering times constant.