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
1919.m_ssm_sxm_sxdm_dsf20m_dsf80
January23.97.31919-01-08271
February73.38.91919-02-10163
March102.99.61919-03-08171
April184.012.81919-04-2875
May249.613.41919-05-2947
June300.514.71919-06-18110
July289.315.01919-07-04511
August308.813.51919-08-16113
September241.211.11919-09-0649
October106.99.31919-10-17142
November48.87.61919-11-17211
December38.76.11919-12-18230