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
1976.m_ssm_sxm_sxdm_dsf20m_dsf80
January53.07.01976-01-05211
February74.97.81976-02-22160
March145.111.21976-03-30115
April172.311.41976-04-02106
May249.413.31976-05-1677
June277.714.41976-06-10410
July291.414.81976-07-0249
August217.611.81976-08-1042
September153.611.21976-09-09103
October138.88.91976-10-08130
November70.47.61976-11-10190
December58.66.11976-12-27190