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
1989.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-8.91989-01-03-3.02900
February-7.41989-02-121.11500
March-1.61989-03-283.4800
April2.01989-04-258.2000
May5.01989-05-0710.7000
June7.81989-06-1712.8000
July7.61989-07-2014.8003
August7.21989-08-0315.2001
September6.61989-09-0211.2000
October-0.61989-10-055.6300
November-10.51989-11-301.31210
December-11.21989-12-12-1.82120