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
2012.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-11.52012-01-31-2.22510
February-23.12012-02-10-9.626160
March-7.82012-03-070.61300
April-3.82012-04-106.3200
May6.52012-05-1811.1000
June8.92012-06-0614.8001
July10.72012-07-1717.1002
August7.92012-08-1214.2002
September4.52012-09-2212.6000
October-0.52012-10-317.1200
November-0.22012-11-204.2100
December-15.22012-12-10-2.92230