Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 1284 | 1162 | 1301 | 1259 | 1309 | 1261 |
| Tmin | 1242 | 1120 | 1240 | 1200 | 1240 | 1200 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 127 | 125 | 125 | 137 | 159 | 150 |
| Humidity/Visibility | 32 | 27 | 44 | 58 | 69 | 64 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 1293 | 1299 | 1253 | 1304 | 1265 | 1311 |
| Tmin | 1240 | 1240 | 1200 | 1240 | 1200 | 1240 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 148 | 169 | 159 | 133 | 142 | 165 |
| Humidity/Visibility | 63 | 61 | 56 | 69 | 63 | 53 |
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. |
