Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1274 | 1173 | 1289 | 1248 | 1286 | 1240 |
Tmin | 1266 | 1167 | 1279 | 1248 | 1285 | 1234 |
Duration of sunshine | 186 | 169 | 217 | 180 | 155 | 90 |
Precipitation | 847 | 757 | 840 | 815 | 838 | 816 |
Humidity/Visibility | 165 | 155 | 169 | 163 | 158 | 145 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1292 | 1266 | 1231 | 1313 | 1261 | 1294 |
Tmin | 1290 | 1259 | 1232 | 1296 | 1253 | 1291 |
Duration of sunshine | 155 | 124 | 180 | 124 | 90 | 186 |
Precipitation | 844 | 845 | 834 | 870 | 850 | 219 |
Humidity/Visibility | 164 | 140 | 155 | 170 | 161 | 170 |
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. |