Rachio documentation states: “Flexible Daily schedules will record the estimated moisture balance of each zone using evapotranspiration (ET) data provided by your preferred weather station.” (https://support.rachio.com/hc/en-us/articles/115010379367-What-are-moisture-levels-Flexible-Daily-Schedules-)
It also states: "Then, based on the weather station that your controller is utilizing (whether that be an official station or a personal station), we are gathering the following data on a zone by zone basis:
- Evapotranspiration levels
- Minimum and Maximum Temperature
- Solar Radiation
- Relative Humidity"
I suspect the ET value used by the Flex Daily schedules is calculated by Rachio using something like the PENMAN-MONTEITH EQUATION; so it seems like the above two quotes are incorrect: i.e., the evapotranspiration levels are NOT a metric provided by the PWS.
Can you confirm that the ET used by the Flex Daily algorithm is in fact calculated by Rachio from the PWS’s Precipitation, Minimum and Maximum Temperature, Solar Radiation, Wind, and Relative Humidity data?