| 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 | 86.6 | 7.5 | 1975-01-06 | 14 | 2 |
| February | 141.9 | 9.8 | 1975-02-28 | 9 | 8 |
| March | 120.8 | 9.4 | 1975-03-01 | 12 | 1 |
| April | 206.3 | 13.1 | 1975-04-19 | 6 | 7 |
| May | 261.6 | 14.1 | 1975-05-29 | 5 | 9 |
| June | 209.5 | 15.1 | 1975-06-06 | 8 | 6 |
| July | 259.7 | 14.6 | 1975-07-03 | 6 | 8 |
| August | 248.0 | 12.9 | 1975-08-21 | 4 | 7 |
| September | 182.7 | 10.1 | 1975-09-19 | 6 | 2 |
| October | 124.8 | 9.7 | 1975-10-03 | 12 | 5 |
| November | 55.3 | 7.0 | 1975-11-24 | 20 | 0 |
| December | 52.8 | 7.6 | 1975-12-07 | 23 | 3 |