Description of elements in the header
m_ssamount of monthly sunshine duration
m_sxthe maximum sunshine duration in the month
m_sxdthe day with the maximum sunshine duration
m_dsf20number of days when the sunshine duration is less than 20 % of the astronomic sunshine duration
m_dsf80number of days when the sunshine duration is more than 80 % of the astronomic sunshine duration
1974.m_ssm_sxm_sxdm_dsf20m_dsf80
January25.07.41974-01-21261
February78.07.91974-02-12140
March169.810.31974-03-2172
April196.711.31974-04-1053
May200.313.71974-05-2793
June193.314.31974-06-03114
July265.613.91974-07-0455
August250.612.91974-08-1437
September179.011.61974-09-0697
October66.37.01974-10-11180
November66.57.51974-11-09160
December57.06.41974-12-15190