Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1200 | 1090 | 1209 | 1192 | 1227 | 1200 |
Tmin | 1196 | 1088 | 1203 | 1190 | 1228 | 1198 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 124 | 120 | 138 | 156 | 151 | 152 |
Humidity/Visibility | 122 | 108 | 120 | 140 | 149 | 149 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1236 | 1229 | 1188 | 1232 | 1194 | 1236 |
Tmin | 1234 | 1231 | 1189 | 1228 | 1196 | 1239 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 155 | 155 | 154 | 155 | 159 | 156 |
Humidity/Visibility | 153 | 145 | 147 | 146 | 144 | 151 |
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. |