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The hourly data is available in the PVsyst standard format, for a direct and easy import in PVsyst, and also in .tm2 format.

 
Understanding Vaisala file headers (PVSyst standard format)

The time reference is the local time. Files headers will differ according to the time zone of the location.
 

•Locations with Integer Time Zone :

 
   - The first line is labelled 1h0 minutes, which means that data was accumulated "from 0h to 1h".

   - PVSyst reads the label 1h0 minutes as "from 1h to 2h",

   - and will consequently consider that the data is +1h ahead compared to the sun position.

       => Tag Hour shift;-1;  required (means that a -1h correction will be applied when reading the data).
 

 

•Locations with half-integer Time Zone :

   - The first line is labelled 1h30 minutes, which means that data was accumulated "from 0h30 to1h30".

   - PVSyst reads the label 1h30 minutes as "from 1h to 2h"  (no reading of minutes),

   - and will consequently consider that the data is +30mn ahead compared to the sun position.

       => Tag Time Shift;-30; required (means that a -30mn correction will be applied when reading the data).