Sandaysoft

hi.

i'm wondering what is the way to do calculations with cumulus.

i'm trying to discover how to calculate "growing degree day" (http://en.wikipedia.org/wiki/Growing_degree_day) with my weatherstation data collected by cumulus.

does someone have solution or good hint how to do this?

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La Crosse WS2355 + cumulus 1.9.0

Cumulus logs the daily average temperature in dayfile.txt. From the link you gave, the calculation is simply that figure minus a 'base' figure of 10 degrees. So if you import dayfile.txt into a spreadsheet, you can create a column to do that calculation for each day.

Cumulus supplies 'heating degree days' and 'cooling degree days' in the NOAA reports; the latter is very similar to growing degree days, but is calculated on a minute-by-minute basis, so in theory gives a 'better' figure than just taking the daily average.

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Steve
Sanday Weather
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