| 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 | 124.8 | 8.5 | 1975-01-19 | 10 | 7 |
| February | 164.2 | 9.4 | 1975-02-24 | 5 | 8 |
| March | 145.7 | 9.3 | 1975-03-01 | 9 | 2 |
| April | 134.2 | 12.6 | 1975-04-29 | 13 | 4 |
| May | 218.7 | 12.2 | 1975-05-29 | 5 | 1 |
| June | 191.9 | 12.5 | 1975-06-27 | 8 | 0 |
| July | 269.6 | 13.3 | 1975-07-08 | 2 | 4 |
| August | 198.5 | 12.5 | 1975-08-21 | 8 | 2 |
| September | 237.3 | 11.3 | 1975-09-11 | 2 | 5 |
| October | 127.5 | 9.6 | 1975-10-25 | 13 | 3 |
| November | 74.3 | 8.7 | 1975-11-03 | 18 | 2 |
| December | 89.1 | 7.1 | 1975-12-07 | 16 | 1 |