| 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 | 19.4 | 7.5 | 1997-01-26 | 28 | 0 |
| February | 161.3 | 10.1 | 1997-02-28 | 6 | 8 |
| March | 202.7 | 10.2 | 1997-03-31 | 5 | 9 |
| April | 183.4 | 12.0 | 1997-04-18 | 9 | 5 |
| May | 293.6 | 13.4 | 1997-05-20 | 3 | 12 |
| June | 281.9 | 14.0 | 1997-06-15 | 1 | 6 |
| July | 262.7 | 13.7 | 1997-07-02 | 5 | 7 |
| August | 258.6 | 12.5 | 1997-08-05 | 3 | 8 |
| September | 273.7 | 11.1 | 1997-09-01 | 2 | 11 |
| October | 159.5 | 9.9 | 1997-10-05 | 8 | 8 |
| November | 67.1 | 8.9 | 1997-11-04 | 20 | 2 |
| December | 59.7 | 7.4 | 1997-12-30 | 20 | 2 |