Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 701 | 639 | 704 | 706 | 740 | 714 |
| Tmin | 706 | 629 | 701 | 709 | 737 | 715 |
| Durée d’insolation | 105 | 126 | 160 | 122 | 128 | 175 |
| Précipitation | 99 | 97 | 101 | 127 | 140 | 124 |
| Humidité/Visibilité | 85 | 78 | 86 | 105 | 117 | 114 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 733 | 736 | 705 | 724 | 707 | 726 |
| Tmin | 735 | 736 | 712 | 731 | 697 | 730 |
| Durée d’insolation | 154 | 118 | 178 | 92 | 143 | 149 |
| Précipitation | 130 | 132 | 134 | 136 | 150 | 144 |
| Humidité/Visibilité | 116 | 115 | 108 | 107 | 102 | 111 |
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. |
Alep