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
1976.m_ssm_sxm_sxdm_dsf20m_dsf80
January86.97.61976-01-08164
February88.99.41976-02-28174
March190.911.01976-03-29108
April170.912.81976-04-30107
May272.914.21976-05-16512
June290.215.01976-06-19412
July286.214.61976-07-03411
August228.512.71976-08-0758
September143.511.01976-09-09124
October141.59.91976-10-10135
November76.97.81976-11-25162
December52.76.61976-12-27210