Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1135 | 1019 | 1131 | 1097 | 1119 | 1097 |
Tmin | 1073 | 967 | 1075 | 1037 | 1057 | 1041 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 186 | 169 | 187 | 181 | 186 | 180 |
Humidity/Visibility | 184 | 164 | 184 | 178 | 182 | 177 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1132 | 1134 | 1126 | 1162 | 1133 | 1162 |
Tmin | 1075 | 1068 | 1071 | 1104 | 1076 | 1106 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 187 | 190 | 210 | 216 | 210 | 217 |
Humidity/Visibility | 181 | 183 | 204 | 207 | 203 | 214 |
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. |