| 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 | 68.5 | 7.0 | 1964-01-16 | 17 | 0 |
| February | 95.0 | 8.2 | 1964-02-23 | 13 | 0 |
| March | 74.4 | 9.1 | 1964-03-24 | 20 | 0 |
| April | 197.9 | 13.1 | 1964-04-27 | 8 | 6 |
| May | 208.3 | 13.3 | 1964-05-31 | 8 | 4 |
| June | 309.9 | 14.5 | 1964-06-04 | 2 | 10 |
| July | 317.2 | 14.3 | 1964-07-16 | 4 | 13 |
| August | 257.6 | 13.5 | 1964-08-07 | 6 | 13 |
| September | 201.8 | 10.9 | 1964-09-04 | 6 | 7 |
| October | 111.6 | 10.6 | 1964-10-04 | 15 | 5 |
| November | 55.7 | 7.9 | 1964-11-14 | 19 | 1 |
| December | 25.2 | 5.1 | 1964-12-31 | 25 | 0 |