| 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 |
| 1930. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 52.3 | 8.4 | 1930-01-27 | 21 | 3 |
| February | 144.1 | 9.9 | 1930-02-26 | 9 | 7 |
| March | 173.5 | 11.3 | 1930-03-22 | 8 | 6 |
| April | 202.2 | 12.4 | 1930-04-25 | 5 | 7 |
| May | 239.5 | 13.8 | 1930-05-30 | 7 | 6 |
| June | 331.6 | 14.3 | 1930-06-26 | 0 | 9 |
| July | 324.6 | 14.1 | 1930-07-03 | 2 | 14 |
| August | 299.1 | 13.3 | 1930-08-06 | 4 | 15 |
| September | 229.4 | 11.4 | 1930-09-01 | 3 | 5 |
| October | 147.9 | 10.0 | 1930-10-03 | 11 | 8 |
| November | 133.9 | 8.7 | 1930-11-15 | 6 | 6 |
| December | 17.7 | 5.6 | 1930-12-19 | 27 | 0 |