| 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 |
| 1975. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 132.3 | 8.0 | 1975-01-06 | 8 | 7 |
| February | 139.9 | 9.7 | 1975-02-23 | 11 | 7 |
| March | 140.9 | 10.0 | 1975-03-10 | 10 | 2 |
| April | 190.1 | 13.3 | 1975-04-30 | 7 | 6 |
| May | 227.0 | 14.1 | 1975-05-29 | 7 | 6 |
| June | 211.8 | 14.7 | 1975-06-27 | 9 | 3 |
| July | 279.3 | 14.4 | 1975-07-07 | 4 | 10 |
| August | 213.7 | 12.8 | 1975-08-14 | 7 | 4 |
| September | 228.8 | 10.9 | 1975-09-10 | 3 | 8 |
| October | 126.5 | 10.0 | 1975-10-08 | 11 | 7 |
| November | 61.2 | 7.8 | 1975-11-27 | 20 | 3 |
| December | 67.7 | 7.9 | 1975-12-07 | 20 | 3 |