Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 79 | 77 | 85 | 85 | 91 | 95 |
| Tmin | 89 | 79 | 88 | 84 | 87 | 93 |
| Duration of sunshine | 217 | 226 | 279 | 150 | 279 | 240 |
| Precipitation | 48 | 43 | 39 | 43 | 39 | 47 |
| Humidity/Visibility | 87 | 82 | 89 | 87 | 91 | 98 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 114 | 105 | 111 | 111 | 111 | 117 |
| Tmin | 118 | 115 | 117 | 114 | 116 | 121 |
| Duration of sunshine | 217 | 310 | 210 | 248 | 180 | 248 |
| Precipitation | 47 | 53 | 37 | 37 | 50 | 50 |
| Humidity/Visibility | 118 | 113 | 115 | 114 | 113 | 120 |
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. |
Ak-Bajtal