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
1991.m_ssm_sxm_sxdm_dsf20m_dsf80
January99.58.11991-01-17144
February123.68.81991-02-2795
March72.38.71991-03-15210
April159.111.51991-04-21101
May184.012.71991-05-2481
June259.113.81991-06-2337
July247.113.31991-07-1642
August248.812.01991-08-1733
September195.111.01991-09-0283
October119.89.51991-10-04142
November60.07.11991-11-01180
December94.66.61991-12-31120