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
2000.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-13.32000-01-25-4.22920
February-6.02000-02-22-1.82200
March-4.42000-03-130.41800
April-1.02000-04-098.0100
May5.82000-05-0510.6000
June5.42000-06-1813.3002
July8.22000-07-1014.1000
August7.72000-08-2714.9001
September2.72000-09-2710.4000
October-3.32000-10-248.3300
November-4.52000-11-295.1400
December-12.02000-12-24-0.91820