| 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 |
| 1971. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 18.3 | 7.6 | 1971-01-25 | 28 | 1 |
| February | 57.3 | 8.1 | 1971-02-24 | 19 | 0 |
| March | 126.8 | 10.0 | 1971-03-31 | 12 | 0 |
| April | 198.0 | 12.8 | 1971-04-20 | 9 | 4 |
| May | 252.6 | 13.0 | 1971-05-13 | 6 | 5 |
| June | 227.2 | 14.0 | 1971-06-15 | 5 | 2 |
| July | 272.1 | 14.7 | 1971-07-10 | 5 | 9 |
| August | 282.8 | 12.7 | 1971-08-10 | 0 | 8 |
| September | 141.4 | 10.7 | 1971-09-04 | 11 | 1 |
| October | 154.1 | 10.2 | 1971-10-05 | 9 | 5 |
| November | 56.4 | 7.5 | 1971-11-05 | 19 | 0 |
| December | 41.8 | 7.2 | 1971-12-24 | 24 | 2 |