| 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 | 65.8 | 7.3 | 1971-01-23 | 18 | 0 |
| February | 99.0 | 8.7 | 1971-02-27 | 11 | 0 |
| March | 99.1 | 10.5 | 1971-03-12 | 15 | 1 |
| April | 170.3 | 12.0 | 1971-04-15 | 11 | 6 |
| May | 250.0 | 13.9 | 1971-05-26 | 7 | 9 |
| June | 211.0 | 14.4 | 1971-06-10 | 6 | 1 |
| July | 253.3 | 14.7 | 1971-07-09 | 3 | 7 |
| August | 281.1 | 13.2 | 1971-08-09 | 3 | 14 |
| September | 171.0 | 11.4 | 1971-09-01 | 7 | 4 |
| October | 206.3 | 10.4 | 1971-10-07 | 4 | 8 |
| November | 54.2 | 8.2 | 1971-11-05 | 22 | 2 |
| December | 69.1 | 6.6 | 1971-12-15 | 17 | 0 |