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I have a weather data file, but I don’t know what values to use for the exact SHIFT, latitude (in Type 16) etc., or if my (measured) data is coherent. What can I do to find out ?

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I have a weather data file, but I don’t know what values to use for the exact SHIFT, latitude (in Type 16) etc., or if my (measured) data is coherent. What can I do to find out ?

0

plot the extraterrestrial versus the measured horizontal radiation. With the plot you can see easily if there is a wrong shift (and even if your latitude is wrong). If the data is “shifted”, you can use a “wrong” shift to compensate for it. You may have to adapt your schedules because the hours you simulate are actually “hours and a half” in true local time, but the influence of this is usually not very big. Note that Type 109 automatically reads the latitude, longitude and shift from the data file.

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