| 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 | 46.5 | 6.8 | 1971-01-25 | 21 | 0 |
| February | 74.2 | 7.8 | 1971-02-12 | 17 | 0 |
| March | 107.0 | 9.5 | 1971-03-26 | 15 | 0 |
| April | 199.4 | 12.1 | 1971-04-19 | 9 | 7 |
| May | 254.1 | 13.0 | 1971-05-22 | 5 | 5 |
| June | 252.6 | 13.6 | 1971-06-15 | 2 | 4 |
| July | 276.5 | 14.1 | 1971-07-10 | 2 | 9 |
| August | 306.7 | 12.9 | 1971-08-21 | 1 | 13 |
| September | 154.1 | 10.3 | 1971-09-24 | 8 | 1 |
| October | 172.4 | 9.9 | 1971-10-08 | 7 | 6 |
| November | 56.0 | 8.3 | 1971-11-05 | 20 | 2 |
| December | 46.3 | 6.1 | 1971-12-24 | 21 | 0 |