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
1922.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-14.41922-01-15-5.12750
February-21.61922-02-14-7.925100
March-0.81922-03-193.7300
April0.01922-04-035.9100
May7.41922-05-0512.2000
June10.01922-06-2015.6000
July12.41922-07-2916.7004
August8.61922-08-2515.6002
September5.41922-09-2012.1000
October1.01922-10-256.8000
November-6.81922-11-290.21700
December-6.61922-12-11-0.61700