Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 490 | 433 | 493 | 476 | 492 | 480 |
Tmin | 493 | 440 | 492 | 477 | 494 | 474 |
Duration of sunshine | 461 | 385 | 457 | 447 | 493 | 475 |
Precipitation | 192 | 176 | 203 | 197 | 192 | 186 |
Humidity/Visibility | 182 | 157 | 182 | 176 | 183 | 178 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 488 | 495 | 505 | 509 | 488 | 524 |
Tmin | 490 | 498 | 508 | 516 | 490 | 524 |
Duration of sunshine | 489 | 465 | 478 | 513 | 459 | 490 |
Precipitation | 187 | 193 | 210 | 217 | 213 | 219 |
Humidity/Visibility | 181 | 183 | 205 | 205 | 206 | 214 |
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. |