| 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 |
| 1998. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 59.2 | 7.7 | 1998-01-18 | 20 | 1 |
| February | 142.2 | 9.2 | 1998-02-28 | 7 | 7 |
| March | 167.4 | 11.2 | 1998-03-30 | 10 | 7 |
| April | 160.9 | 12.5 | 1998-04-27 | 7 | 4 |
| May | 230.5 | 13.1 | 1998-05-08 | 8 | 7 |
| June | 246.1 | 14.3 | 1998-06-03 | 6 | 7 |
| July | 266.7 | 15.0 | 1998-07-21 | 4 | 7 |
| August | 306.3 | 13.7 | 1998-08-02 | 1 | 15 |
| September | 162.1 | 11.6 | 1998-09-11 | 9 | 8 |
| October | 104.7 | 9.6 | 1998-10-14 | 15 | 3 |
| November | 65.7 | 8.0 | 1998-11-08 | 17 | 2 |
| December | 59.4 | 7.3 | 1998-12-28 | 19 | 2 |