Description of elements in the header
m_tnnmonthly minimum temperature
m_tnndthe day with the monthly minimum temperature
m_tnathe monthly mean of the daily minimum temperatures
m_dtn0number of frost days with a minimum temperature of ≤ 0 °C
m_dtn10number of days with a minimum temperature of ≤ -10 °C
m_dtn20number of warm nights with a minimum temperature of ≥ 20 °C
1966.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-21.11966-01-21-7.33080
February-9.61966-02-011.8800
March-6.01966-03-271.01400
April-0.31966-04-016.9200
May6.61966-05-319.6000
June2.81966-06-0112.6000
July9.41966-07-1014.3000
August6.31966-08-3014.3000
September5.01966-09-2010.1000
October2.41966-10-3110.4000
November-6.21966-11-282.7900
December-9.11966-12-24-0.81800