| 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 |
| 1989. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 58.3 | 6.7 | 1989-01-17 | 18 | 0 |
| February | 52.9 | 7.7 | 1989-02-07 | 19 | 0 |
| March | 161.1 | 10.9 | 1989-03-24 | 8 | 3 |
| April | 158.7 | 13.2 | 1989-04-24 | 10 | 1 |
| May | 240.5 | 14.1 | 1989-05-23 | 8 | 7 |
| June | 195.2 | 14.4 | 1989-06-09 | 7 | 2 |
| July | 250.8 | 13.2 | 1989-07-21 | 3 | 3 |
| August | 191.2 | 11.5 | 1989-08-16 | 9 | 2 |
| September | 175.5 | 11.2 | 1989-09-01 | 7 | 4 |
| October | 190.3 | 10.2 | 1989-10-05 | 5 | 10 |
| November | 124.1 | 8.4 | 1989-11-18 | 12 | 6 |
| December | 104.5 | 7.9 | 1989-12-10 | 11 | 2 |