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
1912.m_ssm_sxm_sxdm_dsf20m_dsf80
January46.87.31912-01-11221
February67.48.61912-02-29170
March122.29.11912-03-30110
April144.810.81912-04-21120
May232.513.51912-05-3155
June250.614.21912-06-1256
July216.712.71912-07-0841
August190.811.51912-08-0180
September60.67.41912-09-29190
October69.46.71912-10-24160
November68.67.11912-11-02140
December34.85.41912-12-04230