| 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 | 58.4 | 7.2 | 1998-01-12 | 18 | 1 |
| February | 157.9 | 9.9 | 1998-02-26 | 4 | 5 |
| March | 186.0 | 11.0 | 1998-03-30 | 8 | 7 |
| April | 134.6 | 12.7 | 1998-04-27 | 12 | 2 |
| May | 237.5 | 13.3 | 1998-05-31 | 7 | 7 |
| June | 257.7 | 14.2 | 1998-06-06 | 3 | 6 |
| July | 286.2 | 14.3 | 1998-07-19 | 2 | 11 |
| August | 293.3 | 13.5 | 1998-08-11 | 3 | 15 |
| September | 160.9 | 10.5 | 1998-09-11 | 11 | 3 |
| October | 130.0 | 9.3 | 1998-10-30 | 11 | 2 |
| November | 58.1 | 8.1 | 1998-11-13 | 21 | 1 |
| December | 63.9 | 6.8 | 1998-12-14 | 20 | 0 |