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
1969.m_ssm_sxm_sxdm_dsf20m_dsf80
January33.65.91969-01-17220
February24.07.21969-02-10220
March90.510.01969-03-09192
April218.812.81969-04-2768
May285.314.21969-05-28211
June217.012.81969-06-0192
July315.314.81969-07-15111
August207.413.81969-08-05105
September184.710.61969-09-2551
October188.49.51969-10-0544
November76.67.91969-11-02150
December6.13.21969-12-17300