How to calculate the hourly humidity
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The hourly humidity can be selected directly from the U column of the KNMI weather data, since it is provided as a percentage and also required as a percentage.
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| Column | Name | Unit | Dutch Description |
|---|---|---|---|
| 2/B | YYYYMMDD | Date | datum (YYYY=jaar,MM=maand,DD=dag) |
| 3/C | HH | Hour | tijd (HH=uur, UT.12 UT=13 MET, 14 MEZT. Uurvak 05 loopt van 04.00 UT tot 5.00 UT |
| 20/S | U | % | Relatieve vochtigheid (in procenten) op 1.50 m hoogte tijdens de waarneming |
Notes
- The values at each hour regard the measurement over the preceding hour up to that time. To obtain the value for 12:00 UTC, the values at 12:00 UTC must be used.