Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1651 | 1515 | 1673 | 1619 | 1673 | 1620 |
Tmin | 1651 | 1510 | 1674 | 1619 | 1674 | 1619 |
Duration of sunshine | 217 | 225 | 279 | 270 | 310 | 300 |
Precipitation | 186 | 169 | 187 | 181 | 186 | 180 |
Humidity/Visibility | 184 | 165 | 185 | 179 | 185 | 179 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1669 | 1673 | 1648 | 1696 | 1646 | 1705 |
Tmin | 1672 | 1676 | 1649 | 1700 | 1647 | 1703 |
Duration of sunshine | 310 | 310 | 300 | 310 | 240 | 279 |
Precipitation | 185 | 190 | 210 | 216 | 212 | 218 |
Humidity/Visibility | 181 | 185 | 206 | 210 | 205 | 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. |