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
1976.m_ssm_sxm_sxdm_dsf20m_dsf80
January52.37.41976-01-16192
February115.88.71976-02-21113
March139.810.51976-03-30123
April212.812.91976-04-2158
May235.014.41976-05-11910
June304.114.91976-06-06311
July303.915.31976-07-02211
August246.212.31976-08-1048
September152.411.21976-09-14103
October110.59.31976-10-13111
November64.26.61976-11-10160
December47.06.01976-12-27210