| 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 |
| 1974. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 54.0 | 7.5 | 1974-01-26 | 21 | 1 |
| February | 64.8 | 8.9 | 1974-02-12 | 18 | 2 |
| March | 132.9 | 10.8 | 1974-03-21 | 14 | 3 |
| April | 186.3 | 11.8 | 1974-04-09 | 5 | 6 |
| May | 183.6 | 13.4 | 1974-05-19 | 8 | 1 |
| June | 180.3 | 13.7 | 1974-06-03 | 7 | 1 |
| July | 227.5 | 14.0 | 1974-07-05 | 8 | 3 |
| August | 230.8 | 13.0 | 1974-08-17 | 5 | 5 |
| September | 145.9 | 11.6 | 1974-09-08 | 14 | 6 |
| October | 75.3 | 9.6 | 1974-10-03 | 20 | 2 |
| November | 94.1 | 8.0 | 1974-11-01 | 13 | 0 |
| December | 63.2 | 6.4 | 1974-12-14 | 19 | 0 |