| 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 |
| 2004. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 60.7 | 8.5 | 2004-01-22 | 20 | 3 |
| February | 83.0 | 10.1 | 2004-02-20 | 15 | 3 |
| March | 146.3 | 11.1 | 2004-03-31 | 11 | 5 |
| April | 218.4 | 12.6 | 2004-04-20 | 8 | 11 |
| May | 240.7 | 13.3 | 2004-05-30 | 2 | 3 |
| June | 302.8 | 15.0 | 2004-06-23 | 2 | 8 |
| July | 289.4 | 14.4 | 2004-07-04 | 4 | 9 |
| August | 309.7 | 13.6 | 2004-08-16 | 2 | 15 |
| September | 207.5 | 12.8 | 2004-09-09 | 6 | 11 |
| October | 162.3 | 10.4 | 2004-10-12 | 10 | 8 |
| November | 78.6 | 8.3 | 2004-11-25 | 17 | 3 |
| December | 50.5 | 7.7 | 2004-12-30 | 21 | 3 |