Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 333 | 284 | 324 | 355 | 360 | 343 |
Tmin | 333 | 294 | 334 | 353 | 367 | 355 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 150 | 126 | 104 | 138 | 132 | 143 |
Humidity/Visibility | 44 | 33 | 58 | 83 | 84 | 75 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 350 | 360 | 348 | 357 | 340 | 351 |
Tmin | 361 | 369 | 355 | 363 | 343 | 362 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 148 | 145 | 137 | 127 | 150 | 150 |
Humidity/Visibility | 76 | 80 | 78 | 81 | 70 | 74 |
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. |