| 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 | 40.6 | 8.2 | 1997-01-27 | 25 | 4 |
| February | 116.8 | 9.9 | 1997-02-28 | 12 | 8 |
| March | 222.2 | 11.3 | 1997-03-30 | 6 | 9 |
| April | 179.1 | 12.9 | 1997-04-24 | 10 | 5 |
| May | 266.4 | 13.6 | 1997-05-25 | 6 | 9 |
| June | 282.1 | 15.0 | 1997-06-28 | 5 | 13 |
| July | 227.5 | 14.5 | 1997-07-02 | 8 | 6 |
| August | 284.7 | 13.2 | 1997-08-18 | 2 | 11 |
| September | 221.5 | 11.6 | 1997-09-11 | 5 | 7 |
| October | 171.5 | 9.8 | 1997-10-18 | 4 | 4 |
| November | 71.7 | 8.7 | 1997-11-04 | 17 | 1 |
| December | 29.7 | 6.6 | 1997-12-17 | 23 | 0 |