| 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 | 66.2 | 8.5 | 1969-01-31 | 18 | 3 |
| February | 48.1 | 7.8 | 1969-02-18 | 20 | 0 |
| March | 76.1 | 9.4 | 1969-03-12 | 19 | 1 |
| April | 224.2 | 13.5 | 1969-04-27 | 6 | 6 |
| May | 289.4 | 14.3 | 1969-05-14 | 4 | 13 |
| June | 223.9 | 14.0 | 1969-06-10 | 8 | 7 |
| July | 317.2 | 15.0 | 1969-07-02 | 2 | 12 |
| August | 199.9 | 13.0 | 1969-08-06 | 9 | 3 |
| September | 189.9 | 11.2 | 1969-09-01 | 7 | 5 |
| October | 186.5 | 9.6 | 1969-10-09 | 5 | 4 |
| November | 111.4 | 8.7 | 1969-11-02 | 12 | 3 |
| December | 11.4 | 5.4 | 1969-12-03 | 28 | 0 |