| 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 |
| 1964. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 48.9 | 7.6 | 1964-01-28 | 23 | 1 |
| February | 106.5 | 8.7 | 1964-02-23 | 13 | 4 |
| March | 75.3 | 9.2 | 1964-03-01 | 18 | 1 |
| April | 210.2 | 12.9 | 1964-04-18 | 8 | 6 |
| May | 250.3 | 14.1 | 1964-05-25 | 7 | 11 |
| June | 316.3 | 14.4 | 1964-06-06 | 2 | 9 |
| July | 321.9 | 14.3 | 1964-07-07 | 3 | 16 |
| August | 280.9 | 13.3 | 1964-08-07 | 6 | 14 |
| September | 214.1 | 11.4 | 1964-09-05 | 5 | 9 |
| October | 137.9 | 10.6 | 1964-10-04 | 11 | 5 |
| November | 68.8 | 7.7 | 1964-11-19 | 17 | 2 |
| December | 44.6 | 6.8 | 1964-12-23 | 22 | 0 |