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
January101.27.41938-01-12112
February154.110.01938-02-2069
March191.110.11938-03-1676
April188.011.21938-04-1265
May238.114.31938-05-1577
June363.615.01938-06-29015
July321.615.21938-07-02313
August247.513.61938-08-21812
September222.311.11938-09-0958
October157.19.91938-10-15117
November97.28.21938-11-24144
December39.57.21938-12-11241