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
1997.m_ssm_sxm_sxdm_dsf20m_dsf80
January41.67.51997-01-29230
February111.39.21997-02-28105
March196.410.91997-03-2967
April206.312.01997-04-2445
May267.512.71997-05-1135
June251.313.21997-06-2433
July231.913.41997-07-0455
August254.812.31997-08-1445
September249.411.31997-09-01311
October178.19.41997-10-0654
November55.88.31997-11-04211
December30.95.51997-12-30220