Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 1094 | 1038 | 1144 | 1117 | 1147 | 1131 |
| Tmin | 1093 | 1038 | 1141 | 1120 | 1150 | 1138 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 697 | 628 | 693 | 679 | 717 | 699 |
| Humidity/Visibility | 88 | 80 | 85 | 95 | 112 | 112 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 1173 | 1159 | 1095 | 1166 | 1131 | 1173 |
| Tmin | 1172 | 1168 | 1098 | 1170 | 1134 | 1175 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 717 | 724 | 695 | 715 | 693 | 130 |
| Humidity/Visibility | 117 | 108 | 106 | 110 | 110 | 119 |
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. |
