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
1923.m_ssm_sxm_sxdm_dsf20m_dsf80
January41.55.41923-01-25230
February33.58.41923-02-23210
March139.19.71923-03-25130
April113.512.41923-04-26183
May332.014.31923-05-20115
June238.813.31923-06-0673
July330.714.01923-07-10012
August330.414.01923-08-02118
September215.210.71923-09-0751
October146.48.91923-10-0181
November52.86.41923-11-30200
December46.46.21923-12-22200