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
1964.m_ssm_sxm_sxdm_dsf20m_dsf80
January43.26.71964-01-16220
February105.48.91964-02-13133
March59.19.11964-03-01221
April184.313.11964-04-2697
May237.613.21964-05-0676
June300.014.21964-06-1116
July324.414.01964-07-09313
August245.612.51964-08-03612
September199.511.01964-09-0557
October104.310.01964-10-04155
November67.07.41964-11-15170
December25.15.01964-12-30250