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
1979.m_ssm_sxm_sxdm_dsf20m_dsf80
January68.17.31979-01-12182
February81.38.81979-02-21161
March160.110.31979-03-24104
April209.111.41979-04-1276
May300.414.21979-05-29614
June237.513.61979-06-0266
July225.813.61979-07-2886
August256.713.21979-08-0557
September210.511.51979-09-0257
October163.110.61979-10-03117
November30.37.91979-11-07251
December45.97.01979-12-13211