| 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 |
| 1978. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 67.7 | 6.8 | 1978-01-15 | 16 | 0 |
| February | 46.9 | 8.6 | 1978-02-21 | 19 | 1 |
| March | 129.8 | 11.3 | 1978-03-30 | 12 | 4 |
| April | 155.5 | 12.4 | 1978-04-09 | 12 | 5 |
| May | 169.7 | 12.7 | 1978-05-31 | 9 | 1 |
| June | 249.2 | 15.0 | 1978-06-01 | 6 | 7 |
| July | 309.8 | 13.6 | 1978-07-04 | 0 | 8 |
| August | 268.0 | 13.2 | 1978-08-06 | 4 | 10 |
| September | 169.1 | 10.9 | 1978-09-14 | 9 | 4 |
| October | 160.5 | 10.0 | 1978-10-09 | 6 | 5 |
| November | 0.0 | 0.0 | 1978-11-01 | 30 | 0 |
| December | 40.3 | 6.9 | 1978-12-05 | 21 | 0 |