| 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 | 50.8 | 7.3 | 1978-01-27 | 22 | 1 |
| February | 70.0 | 9.1 | 1978-02-18 | 18 | 2 |
| March | 149.6 | 11.3 | 1978-03-31 | 8 | 4 |
| April | 181.4 | 11.6 | 1978-04-09 | 9 | 4 |
| May | 196.0 | 12.5 | 1978-05-10 | 8 | 2 |
| June | 235.0 | 14.9 | 1978-06-02 | 6 | 6 |
| July | 250.9 | 14.2 | 1978-07-24 | 4 | 7 |
| August | 252.3 | 13.5 | 1978-08-20 | 2 | 8 |
| September | 166.6 | 12.3 | 1978-09-11 | 12 | 7 |
| October | 152.0 | 10.8 | 1978-10-13 | 6 | 6 |
| November | 44.8 | 7.3 | 1978-11-01 | 21 | 0 |
| December | 36.3 | 4.8 | 1978-12-03 | 21 | 0 |