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
1973.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-9.71973-01-01-3.52700
February-3.91973-02-04-0.41600
March-6.21973-03-12-0.11900
April0.21973-04-124.9000
May2.01973-05-1810.6000
June7.01973-06-1813.6000
July11.41973-07-2715.1000
August10.01973-08-1114.3000
September2.11973-09-1511.2000
October-5.41973-10-293.6900
November-7.91973-11-22-2.52200
December-17.41973-12-04-3.42150