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
1975.m_ssm_sxm_sxdm_dsf20m_dsf80
January124.88.51975-01-19107
February164.29.41975-02-2458
March145.79.31975-03-0192
April134.212.61975-04-29134
May218.712.21975-05-2951
June191.912.51975-06-2780
July269.613.31975-07-0824
August198.512.51975-08-2182
September237.311.31975-09-1125
October127.59.61975-10-25133
November74.38.71975-11-03182
December89.17.11975-12-07161