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
1955.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-14.01955-01-03-3.02610
February-6.51955-02-27-0.61600
March-16.21955-03-05-0.51530
April-6.71955-04-012.4600
May0.71955-05-318.4000
June3.21955-06-0112.8001
July10.91955-07-0915.8000
August11.61955-08-0914.5000
September5.31955-09-2111.5000
October-2.51955-10-306.9200
November-7.01955-11-272.8800
December-6.01955-12-130.31400