Number of days available for climatic review
| Parameter | Jan | Feb | Mär | Apr | Mai | Jun |
| Tmax | 2058 | 1861 | 2066 | 2003 | 2053 | 2004 |
| Tmin | 2069 | 1868 | 2070 | 2003 | 2057 | 2003 |
| Sonnenscheindauer | 0 | 0 | 0 | 0 | 0 | 0 |
| Niederschlag | 155 | 141 | 157 | 151 | 155 | 150 |
| Feuchte/Sicht | 151 | 136 | 150 | 145 | 147 | 143 |
| Parameter | Jul | Aug | Sep | Okt | Nov | Dez |
| Tmax | 2066 | 2062 | 2001 | 2094 | 2036 | 2094 |
| Tmin | 2076 | 2068 | 2005 | 2099 | 2036 | 2097 |
| Sonnenscheindauer | 0 | 0 | 0 | 0 | 0 | 0 |
| Niederschlag | 155 | 157 | 153 | 184 | 180 | 186 |
| Feuchte/Sicht | 145 | 145 | 140 | 172 | 167 | 182 |
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. |
Ashland