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
1975.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-7.71975-01-01-2.42800
February-9.01975-02-09-4.72700
March-7.21975-03-013.0700
April0.71975-04-205.3000
May5.91975-05-0111.9000
June9.01975-06-0314.1000
July8.31975-07-2715.1001
August8.21975-08-1514.6000
September5.11975-09-1012.3000
October0.51975-10-286.3000
November-9.61975-11-270.41100
December-9.71975-12-21-3.12600