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
1902.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-8.51902-01-16-1.32300
February-5.51902-02-220.61000
March-9.81902-03-140.31300
April-0.71902-04-015.0100
May1.71902-05-037.4000
June9.11902-06-1013.4000
July10.41902-07-1315.2000
August8.81902-08-1415.5002
September3.81902-09-2411.7000
October0.51902-10-257.5000
November-9.41902-11-23-1.51800
December-17.51902-12-10-7.225110