| 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 | 76.9 | 7.4 | 1975-01-19 | 19 | 1 |
| February | 138.0 | 9.7 | 1975-02-23 | 9 | 7 |
| March | 168.6 | 10.4 | 1975-03-21 | 7 | 4 |
| April | 169.5 | 13.0 | 1975-04-28 | 11 | 4 |
| May | 240.6 | 12.9 | 1975-05-13 | 5 | 5 |
| June | 228.1 | 14.7 | 1975-06-27 | 8 | 3 |
| July | 266.5 | 13.8 | 1975-07-09 | 1 | 4 |
| August | 232.3 | 11.7 | 1975-08-10 | 5 | 5 |
| September | 234.2 | 11.3 | 1975-09-09 | 4 | 9 |
| October | 143.1 | 9.5 | 1975-10-08 | 10 | 5 |
| November | 80.8 | 7.4 | 1975-11-25 | 14 | 1 |
| December | 61.1 | 6.9 | 1975-12-19 | 18 | 1 |