Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 332 | 298 | 334 | 345 | 360 | 347 |
Tmin | 310 | 275 | 309 | 323 | 337 | 307 |
Duration of sunshine | 74 | 60 | 70 | 89 | 101 | 89 |
Precipitation | 243 | 224 | 247 | 273 | 282 | 285 |
Humidity/Visibility | 93 | 85 | 101 | 114 | 118 | 109 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 360 | 355 | 340 | 347 | 344 | 354 |
Tmin | 320 | 333 | 322 | 333 | 317 | 330 |
Duration of sunshine | 97 | 116 | 106 | 103 | 93 | 97 |
Precipitation | 302 | 303 | 294 | 287 | 276 | 199 |
Humidity/Visibility | 118 | 113 | 115 | 108 | 104 | 118 |
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. |