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
1983.m_ssm_sxm_sxdm_dsf20m_dsf80
January66.27.71983-01-18161
February108.89.11983-02-23125
March128.510.01983-03-12143
April185.012.11983-04-2571
May279.113.81983-05-18211
June236.813.21983-06-0973
July302.513.71983-07-3106
August265.913.11983-08-0139
September231.111.31983-09-05411
October164.49.61983-10-0255
November100.07.81983-11-02141
December73.86.71983-12-02140