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
1937.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-15.01937-01-25-5.32840
February-4.41937-02-15-0.31700
March-0.41937-03-044.7200
April3.41937-04-266.4000
May4.81937-05-0113.4001
June9.71937-06-0415.9000
July10.41937-07-1216.5002
August10.81937-08-2516.0000
September7.61937-09-1613.6000
October1.41937-10-197.7000
November-4.01937-11-303.5800
December-8.81937-12-28-0.71500