| 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 |
| 1974. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 43.0 | 7.8 | 1974-01-22 | 23 | 1 |
| February | 107.7 | 9.2 | 1974-02-11 | 8 | 3 |
| March | 173.1 | 11.0 | 1974-03-22 | 9 | 7 |
| April | 180.8 | 11.2 | 1974-04-05 | 8 | 6 |
| May | 195.4 | 13.9 | 1974-05-26 | 9 | 5 |
| June | 226.7 | 13.9 | 1974-06-04 | 7 | 7 |
| July | 295.2 | 14.1 | 1974-07-28 | 7 | 13 |
| August | 286.3 | 13.5 | 1974-08-14 | 5 | 15 |
| September | 187.6 | 11.3 | 1974-09-06 | 9 | 5 |
| October | 81.9 | 9.4 | 1974-10-19 | 19 | 2 |
| November | 107.9 | 8.4 | 1974-11-15 | 12 | 2 |
| December | 79.8 | 7.6 | 1974-12-22 | 16 | 1 |