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ET calculation change

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    RainMachine Nicholas

    Yes as you found out the mixer will have the max temperature between observed and forecast. This is why we save the observed data only for "yesterday" (with WUnderground station configured) so we have a correct min/max for that day and use "correction for the past" in our calculations. The community parser for GW1000 doesn't follow that, it saves the data as it receives it so it will make a difference at the program run. Still this shouldn't be a real issue in the long run because correction for the past will fix this in the next irrigation (ie: Yesterday was irrigated for max 30 degrees but it was actually 38 so the algorithm will take this into calculation and add the ET differences). 

    With the GW1000 community parser you might see a more "jumpy" percentage between days and be less intuitive but I think for a longer time period it will be around the same values.

    P.S. We don't run GW1000 parser at RainMachine but we simulate these configuration for weather data retrieval with instant weather data and we found what I tried to explain above.

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