| 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 |
| 1997. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 28.5 | 6.2 | 1997-01-26 | 26 | 0 |
| February | 144.1 | 9.5 | 1997-02-28 | 6 | 6 |
| March | 136.5 | 10.5 | 1997-03-08 | 11 | 4 |
| April | 186.6 | 12.7 | 1997-04-24 | 6 | 4 |
| May | 274.0 | 13.4 | 1997-05-25 | 4 | 8 |
| June | 221.8 | 12.1 | 1997-06-15 | 3 | 0 |
| July | 199.1 | 13.8 | 1997-07-04 | 9 | 2 |
| August | 245.6 | 12.5 | 1997-08-13 | 5 | 8 |
| September | 246.4 | 11.5 | 1997-09-01 | 3 | 12 |
| October | 133.2 | 9.9 | 1997-10-03 | 11 | 3 |
| November | 77.8 | 7.1 | 1997-11-03 | 16 | 0 |
| December | 39.3 | 6.6 | 1997-12-30 | 23 | 0 |