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
1904.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-11.41904-01-12-4.32910
February-5.01904-02-270.41600
March-3.11904-03-211.4800
April-0.31904-04-066.0100
May6.31904-05-1310.0000
June10.01904-06-2914.5000
July13.21904-07-3017.3003
August8.81904-08-3015.4001
September5.51904-09-1911.2000
October3.01904-10-317.9000
November-7.81904-11-18-0.51600
December-11.51904-12-28-1.92210