| 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 | 74.3 | 8.0 | 1969-01-21 | 17 | 4 |
| February | 46.3 | 8.0 | 1969-02-10 | 21 | 1 |
| March | 86.5 | 9.4 | 1969-03-10 | 17 | 1 |
| April | 217.6 | 13.2 | 1969-04-27 | 7 | 9 |
| May | 298.1 | 14.3 | 1969-05-15 | 4 | 12 |
| June | 208.9 | 13.9 | 1969-06-11 | 8 | 4 |
| July | 313.2 | 14.7 | 1969-07-16 | 2 | 12 |
| August | 244.9 | 13.9 | 1969-08-05 | 5 | 10 |
| September | 218.9 | 11.6 | 1969-09-01 | 7 | 9 |
| October | 206.8 | 9.8 | 1969-10-09 | 4 | 12 |
| November | 109.0 | 9.2 | 1969-11-02 | 14 | 3 |
| December | 7.5 | 6.5 | 1969-12-03 | 30 | 0 |