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
2013.m_ssm_sxm_sxdm_dsf20m_dsf80
January51.26.72013-01-31200
February69.69.12013-02-28162
March115.210.72013-03-12175
April
May
June
July
August
September
October
November
December