| Description of elements in the header | |
|---|---|
| m_ss | amount of monthly sunshine duration |
| m_sx | the maximum sunshine duration in the month |
| m_sxd | the day with the maximum sunshine duration |
| m_dsf20 | number of days when the sunshine duration is less than 20 % of the astronomic sunshine duration |
| m_dsf80 | number of days when the sunshine duration is more than 80 % of the astronomic sunshine duration |
| 2009. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 39.8 | 6.4 | 2009-01-26 | 22 | 0 |
| February | 51.7 | 6.8 | 2009-02-19 | 17 | 0 |
| March | 126.9 | 9.9 | 2009-03-22 | 10 | 1 |
| April | 241.3 | 12.0 | 2009-04-24 | 2 | 7 |
| May | 269.4 | 13.0 | 2009-05-10 | 3 | 8 |
| June | 236.8 | 14.0 | 2009-06-19 | 5 | 6 |
| July | 346.2 | 14.1 | 2009-07-14 | 0 | 17 |
| August | 289.9 | 12.9 | 2009-08-16 | 2 | 11 |
| September | 230.4 | 12.1 | 2009-09-01 | 2 | 6 |
| October | 137.0 | 10.0 | 2009-10-04 | 11 | 4 |
| November | 89.6 | 8.3 | 2009-11-01 | 14 | 6 |
| December | 37.8 | 6.9 | 2009-12-28 | 23 | 0 |