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
1961.m_ssm_sxm_sxdm_dsf20m_dsf80
January77.57.31961-01-20151
February69.37.31961-02-15140
March174.911.41961-03-28119
April198.311.91961-04-2189
May206.313.11961-05-3153
June234.014.11961-06-3045
July251.214.11961-07-0346
August297.813.31961-08-06112
September233.611.61961-09-0127
October105.49.01961-10-15153
November57.18.41961-11-02213
December51.96.31961-12-08190