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
2004.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-15.82004-01-08-5.02470
February-11.42004-02-13-1.91820
March-7.52004-03-061.41000
April0.42004-04-097.1000
May2.52004-05-258.8000
June7.32004-06-1813.0000
July8.92004-07-0414.3000
August8.32004-08-1614.2000
September2.62004-09-119.7000
October0.62004-10-128.4000
November-6.02004-11-262.3700
December-7.92004-12-23-0.62200