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
2001.m_ssm_sxm_sxdm_dsf20m_dsf80
January51.17.72001-01-12212
February136.49.22001-02-1153
March102.98.32001-03-12100
April180.613.22001-04-27114
May301.413.32001-05-24212
June223.313.42001-06-1286
July238.513.62001-07-3197
August304.512.42001-08-08212
September97.29.92001-09-20182
October129.38.72001-10-08100
November91.97.92001-11-04143
December62.46.52001-12-09170