Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1255 | 1147 | 1271 | 1229 | 1268 | 1229 |
Tmin | 1255 | 1150 | 1270 | 1229 | 1271 | 1229 |
Duration of sunshine | 248 | 254 | 248 | 240 | 248 | 300 |
Precipitation | 775 | 701 | 776 | 751 | 775 | 750 |
Humidity/Visibility | 184 | 167 | 184 | 177 | 183 | 178 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1267 | 1268 | 1252 | 1293 | 1255 | 1301 |
Tmin | 1267 | 1272 | 1257 | 1295 | 1258 | 1299 |
Duration of sunshine | 248 | 310 | 300 | 310 | 240 | 279 |
Precipitation | 777 | 779 | 782 | 804 | 780 | 806 |
Humidity/Visibility | 183 | 183 | 206 | 209 | 205 | 214 |
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. |