| 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 | 65.8 | 7.8 | 1989-01-17 | 18 | 2 |
| February | 56.9 | 8.2 | 1989-02-15 | 19 | 0 |
| March | 184.5 | 10.9 | 1989-03-28 | 7 | 7 |
| April | 167.0 | 10.7 | 1989-04-08 | 7 | 2 |
| May | 209.4 | 13.3 | 1989-05-30 | 10 | 6 |
| June | 209.4 | 14.3 | 1989-06-09 | 7 | 4 |
| July | 294.9 | 13.3 | 1989-07-08 | 2 | 7 |
| August | 234.1 | 12.6 | 1989-08-05 | 6 | 6 |
| September | 187.1 | 10.9 | 1989-09-17 | 8 | 7 |
| October | 202.0 | 10.0 | 1989-10-05 | 5 | 14 |
| November | 127.1 | 8.3 | 1989-11-16 | 11 | 5 |
| December | 98.0 | 7.4 | 1989-12-02 | 11 | 3 |