Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1022 | 924 | 1021 | 1001 | 1054 | 1019 |
Tmin | 1237 | 1119 | 1237 | 1214 | 1270 | 1228 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 63 | 57 | 62 | 75 | 93 | 90 |
Humidity/Visibility | 60 | 56 | 60 | 74 | 92 | 89 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1053 | 1050 | 1017 | 1045 | 1018 | 1052 |
Tmin | 1265 | 1269 | 1223 | 1265 | 1227 | 1269 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 96 | 92 | 91 | 90 | 90 | 93 |
Humidity/Visibility | 91 | 89 | 87 | 86 | 88 | 92 |
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. |