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
1975.m_ssm_sxm_sxdm_dsf20m_dsf80
January71.77.31975-01-09171
February114.59.01975-02-2683
March118.68.81975-03-01111
April185.613.11975-04-29116
May219.612.61975-05-1872
June221.414.71975-06-2784
July282.414.51975-07-0746
August204.912.81975-08-1455
September212.810.71975-09-1835
October128.88.81975-10-03111
November43.77.51975-11-24212
December70.67.11975-12-07181