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
1987.m_ssm_sxm_sxdm_dsf20m_dsf80
January68.07.81987-01-30191
February82.09.31987-02-24165
March119.79.91987-03-22132
April164.311.71987-04-28102
May172.612.31987-05-10113
June236.912.61987-06-0640
July313.713.91987-07-06214
August236.913.01987-08-2247
September196.49.81987-09-1431
October122.19.31987-10-01122
November38.67.51987-11-01230
December52.96.81987-12-31201