Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1225 | 1110 | 1244 | 1210 | 1253 | 1216 |
Tmin | 1197 | 1085 | 1202 | 1182 | 1226 | 1187 |
Duration of sunshine | 100 | 101 | 116 | 129 | 138 | 125 |
Precipitation | 774 | 701 | 799 | 779 | 806 | 779 |
Humidity/Visibility | 125 | 118 | 146 | 148 | 155 | 153 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1255 | 1263 | 1238 | 1269 | 1245 | 1256 |
Tmin | 1229 | 1231 | 1205 | 1217 | 1209 | 1247 |
Duration of sunshine | 141 | 142 | 167 | 140 | 160 | 165 |
Precipitation | 807 | 809 | 809 | 824 | 809 | 188 |
Humidity/Visibility | 159 | 163 | 177 | 162 | 174 | 166 |
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. |