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
1999.m_ssm_sxm_sxdm_dsf20m_dsf80
January63.37.71999-01-14211
February106.29.91999-02-25134
March151.511.11999-03-25112
April184.212.41999-04-19105
May241.714.21999-05-2867
June218.114.21999-06-0684
July281.514.01999-07-18412
August272.212.91999-08-0249
September226.411.91999-09-0658
October153.09.81999-10-1183
November62.98.21999-11-01191
December62.07.21999-12-06182