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
1969.m_ssm_sxm_sxdm_dsf20m_dsf80
January74.38.01969-01-21174
February46.38.01969-02-10211
March86.59.41969-03-10171
April217.613.21969-04-2779
May298.114.31969-05-15412
June208.913.91969-06-1184
July313.214.71969-07-16212
August244.913.91969-08-05510
September218.911.61969-09-0179
October206.89.81969-10-09412
November109.09.21969-11-02143
December7.56.51969-12-03300