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
1929.m_ssm_sxm_sxdm_dsf20m_dsf80
January74.37.31929-01-10181
February81.98.61929-02-10142
March179.110.01929-03-1781
April164.012.01929-04-20113
May248.913.11929-05-0767
June239.313.81929-06-1356
July327.913.91929-07-03217
August281.213.11929-08-01313
September243.911.21929-09-0219
October174.210.01929-10-1357
November76.68.31929-11-02153
December58.77.31929-12-05203