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Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax125111471266122412641226
Tmin125811451268122712661224
Duration of sunshine217225248210248210
Precipitation186169187181186180
Humidity/Visibility184167184178184178


ParameterJulAugSepOctNovDec
Tmax126412651254129312511295
Tmin126312671256129312541299
Duration of sunshine248248240279210186
Precipitation185187210214210215
Humidity/Visibility183183205206201213


Climate data is usually derived from meteorological data of a certain number of years. The actual number of recorded years may vary from only a couple to 50 years or more. The quality of climate data depends on the number of available recorded years. Fewer years means less reliable data. The standart-period for reliable climate data is 30 years. For example, the mean monthly temperature for, let's say January, would ideally calculated from a total number of 930 recorded January-days. However, the usual number of recorded days is much smaller. The table above shows the actual number of recorded days for every parameter measured.

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