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
1940.m_ssm_sxm_sxdm_dsf20m_dsf80
January48.17.31940-01-06201
February114.19.01940-02-28131
March162.910.41940-03-1693
April215.512.51940-04-2269
May200.614.11940-05-25127
June191.114.01940-06-1182
July337.814.71940-07-06214
August252.113.61940-08-1059
September213.911.11940-09-0458
October154.210.01940-10-18119
November74.68.91940-11-05172
December45.47.61940-12-02211