| 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 |
| 1970. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 43.9 | 6.1 | 1970-01-08 | 21 | 0 |
| February | 69.7 | 8.2 | 1970-02-17 | 16 | 0 |
| March | 113.1 | 10.0 | 1970-03-22 | 15 | 2 |
| April | 166.7 | 12.1 | 1970-04-23 | 9 | 2 |
| May | 188.8 | 14.1 | 1970-05-25 | 11 | 3 |
| June | 259.9 | 14.2 | 1970-06-20 | 4 | 8 |
| July | 266.0 | 14.2 | 1970-07-11 | 6 | 13 |
| August | 252.3 | 12.8 | 1970-08-18 | 3 | 7 |
| September | 214.2 | 10.2 | 1970-09-03 | 6 | 3 |
| October | 144.5 | 10.3 | 1970-10-07 | 12 | 8 |
| November | 96.3 | 8.5 | 1970-11-12 | 13 | 1 |
| December | 45.2 | 7.7 | 1970-12-04 | 21 | 1 |