Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1162 | 1067 | 1176 | 1138 | 1172 | 1140 |
Tmin | 1164 | 1064 | 1178 | 1139 | 1172 | 1139 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 189 | 169 | 187 | 181 | 186 | 180 |
Humidity/Visibility | 177 | 165 | 184 | 178 | 183 | 178 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1170 | 1177 | 1161 | 1199 | 1162 | 1206 |
Tmin | 1176 | 1178 | 1163 | 1198 | 1161 | 1204 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 185 | 190 | 210 | 217 | 210 | 218 |
Humidity/Visibility | 179 | 184 | 206 | 207 | 201 | 211 |
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. |