| 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 | 47.5 | 7.2 | 2009-01-03 | 22 | 1 |
| February | 74.6 | 9.0 | 2009-02-18 | 14 | 2 |
| March | 112.4 | 10.2 | 2009-03-18 | 13 | 1 |
| April | 276.6 | 12.7 | 2009-04-22 | 2 | 13 |
| May | 237.1 | 13.9 | 2009-05-20 | 6 | 3 |
| June | 227.6 | 14.2 | 2009-06-12 | 7 | 7 |
| July | 301.8 | 13.7 | 2009-07-14 | 1 | 8 |
| August | 260.7 | 12.9 | 2009-08-01 | 5 | 11 |
| September | 238.5 | 11.8 | 2009-09-06 | 3 | 9 |
| October | 131.4 | 9.8 | 2009-10-04 | 13 | 4 |
| November | 74.2 | 8.2 | 2009-11-12 | 17 | 5 |
| December | 55.6 | 6.1 | 2009-12-26 | 19 | 0 |