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
2004.m_ssm_sxm_sxdm_dsf20m_dsf80
January81.28.22004-01-22186
February104.18.62004-02-20133
March94.710.52004-03-17194
April134.512.12004-04-23152
May225.014.12004-05-2083
June236.814.02004-06-0864
July264.013.72004-07-0359
August300.513.62004-08-02113
September195.711.72004-09-0777
October115.610.02004-10-06143
November88.88.62004-11-05154
December61.67.72004-12-07214