| 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 | 21.6 | 7.0 | 1970-01-30 | 27 | 0 |
| February | 49.8 | 7.9 | 1970-02-12 | 20 | 0 |
| March | 103.9 | 10.1 | 1970-03-17 | 15 | 2 |
| April | 189.1 | 12.2 | 1970-04-25 | 6 | 3 |
| May | 199.8 | 15.0 | 1970-05-25 | 8 | 4 |
| June | 246.7 | 15.0 | 1970-06-21 | 6 | 9 |
| July | 278.9 | 14.2 | 1970-07-02 | 5 | 9 |
| August | 243.6 | 12.5 | 1970-08-02 | 2 | 8 |
| September | 171.3 | 11.2 | 1970-09-08 | 8 | 7 |
| October | 131.4 | 9.3 | 1970-10-08 | 12 | 4 |
| November | 62.1 | 8.1 | 1970-11-04 | 21 | 1 |
| December | 16.4 | 6.4 | 1970-12-05 | 27 | 0 |