| 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 | 78.8 | 7.6 | 1998-01-10 | 15 | 1 |
| February | 161.9 | 9.5 | 1998-02-27 | 3 | 5 |
| March | 162.6 | 10.3 | 1998-03-11 | 7 | 1 |
| April | 170.7 | 12.5 | 1998-04-30 | 10 | 2 |
| May | 228.5 | 13.3 | 1998-05-11 | 6 | 8 |
| June | 221.8 | 13.4 | 1998-06-07 | 6 | 4 |
| July | 210.6 | 13.5 | 1998-07-20 | 8 | 5 |
| August | 275.7 | 13.2 | 1998-08-06 | 1 | 11 |
| September | 119.5 | 11.2 | 1998-09-01 | 17 | 3 |
| October | 111.2 | 9.3 | 1998-10-30 | 13 | 1 |
| November | 93.8 | 8.2 | 1998-11-06 | 11 | 2 |
| December | 43.8 | 7.4 | 1998-12-18 | 23 | 1 |