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
1948.m_ssm_sxm_sxdm_dsf20m_dsf80
January47.17.41948-01-01221
February97.69.51948-02-25134
March226.510.71948-03-2428
April226.813.21948-04-2966
May281.814.11948-05-2457
June252.714.61948-06-1647
July305.114.41948-07-27510
August280.613.81948-08-02411
September223.912.61948-09-0137
October134.39.61948-10-0394
November61.08.01948-11-24211
December31.76.81948-12-15242