Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 425 | 385 | 423 | 411 | 421 | 415 |
Tmin | 425 | 386 | 430 | 413 | 430 | 413 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 188 | 170 | 190 | 189 | 192 | 186 |
Humidity/Visibility | 179 | 162 | 179 | 173 | 176 | 174 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 427 | 428 | 438 | 452 | 437 | 459 |
Tmin | 427 | 425 | 440 | 449 | 439 | 457 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 192 | 207 | 217 | 219 | 214 | 223 |
Humidity/Visibility | 179 | 175 | 199 | 204 | 201 | 210 |
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. |