| 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 |
| 1980. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 53.8 | 8.3 | 1980-01-28 | 22 | 2 |
| February | 96.7 | 9.2 | 1980-02-22 | 13 | 4 |
| March | 108.5 | 10.0 | 1980-03-18 | 14 | 2 |
| April | 148.4 | 13.0 | 1980-04-15 | 12 | 6 |
| May | 220.7 | 14.4 | 1980-05-13 | 6 | 4 |
| June | 210.6 | 14.9 | 1980-06-14 | 6 | 2 |
| July | 218.6 | 14.5 | 1980-07-25 | 4 | 5 |
| August | 230.3 | 13.7 | 1980-08-01 | 7 | 8 |
| September | 143.0 | 11.9 | 1980-09-03 | 11 | 4 |
| October | 144.7 | 10.0 | 1980-10-04 | 10 | 6 |
| November | 81.5 | 8.4 | 1980-11-24 | 17 | 5 |
| December | 91.4 | 7.7 | 1980-12-29 | 16 | 4 |