Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 1189 | 1090 | 1230 | 1195 | 1226 | 1200 |
| Tmin | 1190 | 1091 | 1229 | 1199 | 1227 | 1197 |
| Duration of sunshine | 217 | 226 | 217 | 210 | 248 | 240 |
| Precipitation | 0 | 0 | 0 | 0 | 0 | 0 |
| Humidity/Visibility | 0 | 0 | 0 | 0 | 0 | 0 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 1228 | 1230 | 1213 | 1263 | 1227 | 1237 |
| Tmin | 1233 | 1231 | 1218 | 1263 | 1229 | 1242 |
| Duration of sunshine | 248 | 248 | 240 | 248 | 180 | 217 |
| Precipitation | 0 | 0 | 0 | 0 | 0 | 0 |
| Humidity/Visibility | 0 | 0 | 0 | 0 | 0 | 0 |
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. |
