| 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 |
| 1983. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 66.3 | 7.2 | 1983-01-18 | 19 | 1 |
| February | 111.5 | 9.1 | 1983-02-23 | 10 | 4 |
| March | 154.8 | 9.5 | 1983-03-13 | 9 | 2 |
| April | 162.4 | 12.6 | 1983-04-25 | 9 | 1 |
| May | 222.6 | 13.4 | 1983-05-20 | 7 | 6 |
| June | 210.7 | 13.2 | 1983-06-29 | 9 | 4 |
| July | 301.3 | 13.1 | 1983-07-22 | 3 | 6 |
| August | 223.5 | 13.0 | 1983-08-16 | 6 | 4 |
| September | 218.5 | 11.3 | 1983-09-05 | 4 | 7 |
| October | 168.6 | 9.9 | 1983-10-13 | 7 | 5 |
| November | 86.8 | 8.5 | 1983-11-02 | 16 | 2 |
| December | 63.2 | 5.8 | 1983-12-02 | 17 | 0 |