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
1957.m_ssm_sxm_sxdm_dsf20m_dsf80
January65.57.11957-01-03191
February114.09.01957-02-26104
March201.811.01957-03-2866
April218.012.61957-04-3065
May170.613.71957-05-30134
June341.215.01957-06-16016
July315.914.01957-07-14212
August294.913.31957-08-18314
September206.211.01957-09-0936
October185.210.11957-10-09911
November102.68.51957-11-05114
December45.35.01957-12-04200