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
1938.m_ssm_sxm_sxdm_dsf20m_dsf80
January79.78.01938-01-31172
February141.89.31938-02-2098
March195.010.11938-03-1854
April186.911.81938-04-1654
May245.414.11938-05-2669
June339.314.51938-06-1009
July312.114.81938-07-0719
August236.913.41938-08-2068
September200.511.01938-09-0257
October130.19.71938-10-07113
November64.37.71938-11-03190
December18.65.01938-12-16270