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
1958.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-17.21958-01-29-5.42490
February-12.51958-02-010.41310
March-7.61958-03-24-2.52500
April-1.41958-04-024.5500
May1.01958-05-0512.9000
June3.91958-06-0812.7000
July10.11958-07-2415.2003
August8.41958-08-0615.3000
September1.81958-09-2910.3000
October-1.91958-10-216.4300
November-1.81958-11-234.2600
December-9.81958-12-04-0.11500