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
1949.m_ssm_sxm_sxdm_dsf20m_dsf80
January87.57.11949-01-23120
February141.38.61949-02-0364
March185.411.11949-03-3079
April236.513.11949-04-24410
May243.514.51949-05-2999
June294.614.71949-06-07211
July272.914.51949-07-1324
August277.713.61949-08-05516
September226.711.41949-09-06511
October191.79.81949-10-04610
November41.15.71949-11-30200
December60.77.01949-12-24211