| 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 |
| 1973. | m_ss | m_sx | m_sxd | m_dsf20 | m_dsf80 |
|---|---|---|---|---|---|
| January | 38.6 | 7.0 | 1973-01-29 | 23 | 0 |
| February | 83.4 | 8.3 | 1973-02-28 | 13 | 0 |
| March | 130.1 | 9.9 | 1973-03-23 | 14 | 1 |
| April | 135.4 | 12.2 | 1973-04-26 | 13 | 2 |
| May | 267.4 | 13.5 | 1973-05-28 | 3 | 6 |
| June | 198.0 | 14.2 | 1973-06-20 | 7 | 2 |
| July | 258.9 | 14.7 | 1973-07-17 | 3 | 7 |
| August | 253.0 | 13.5 | 1973-08-10 | 6 | 14 |
| September | 185.0 | 12.0 | 1973-09-04 | 10 | 9 |
| October | 160.5 | 9.5 | 1973-10-25 | 9 | 4 |
| November | 126.3 | 8.4 | 1973-11-01 | 10 | 6 |
| December | 56.2 | 6.9 | 1973-12-10 | 19 | 1 |