| 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 |
| 1937. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 68.7 | 6.8 | 1937-01-17 | 18 | 0 |
| February | 75.3 | 9.3 | 1937-02-15 | 15 | 2 |
| March | 119.5 | 9.8 | 1937-03-22 | 13 | 2 |
| April | 151.5 | 12.7 | 1937-04-20 | 11 | 3 |
| May | 321.0 | 14.0 | 1937-05-20 | 1 | 12 |
| June | 278.5 | 14.9 | 1937-06-10 | 6 | 12 |
| July | 321.7 | 15.2 | 1937-07-03 | 2 | 15 |
| August | 239.6 | 12.8 | 1937-08-10 | 5 | 9 |
| September | 236.7 | 11.3 | 1937-09-03 | 2 | 8 |
| October | 180.4 | 9.7 | 1937-10-22 | 9 | 9 |
| November | 57.5 | 8.8 | 1937-11-01 | 21 | 2 |
| December | 24.3 | 5.4 | 1937-12-22 | 26 | 0 |