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
1930.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-7.51930-01-24-1.92200
February-9.01930-02-10-2.11800
March-2.61930-03-072.9800
April0.91930-04-037.8000
May5.71930-05-1011.2000
June8.81930-06-0615.9002
July10.41930-07-1316.4002
August10.81930-08-1615.4001
September8.41930-09-0513.7000
October1.61930-10-048.0000
November-2.91930-11-194.2400
December-6.01930-12-21-0.61600