| 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 |
| 1969. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 71.9 | 8.1 | 1969-01-21 | 17 | 2 |
| February | 51.0 | 7.3 | 1969-02-16 | 19 | 0 |
| March | 122.1 | 9.6 | 1969-03-22 | 14 | 2 |
| April | 214.1 | 12.9 | 1969-04-27 | 7 | 10 |
| May | 279.4 | 13.5 | 1969-05-15 | 3 | 8 |
| June | 190.3 | 13.6 | 1969-06-23 | 8 | 3 |
| July | 277.0 | 14.0 | 1969-07-16 | 3 | 7 |
| August | 210.5 | 13.3 | 1969-08-04 | 7 | 6 |
| September | 227.8 | 11.5 | 1969-09-09 | 3 | 9 |
| October | 180.0 | 10.0 | 1969-10-08 | 8 | 6 |
| November | 95.3 | 8.7 | 1969-11-02 | 14 | 3 |
| December | 18.6 | 6.4 | 1969-12-17 | 27 | 0 |