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
1947.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-21.11947-01-08-10.231140
February-21.81947-02-01-3.82120
March-3.11947-03-164.0800
April0.61947-04-138.7000
May7.21947-05-0413.1000
June8.61947-06-1115.7002
July13.51947-07-1117.9006
August6.41947-08-3016.3002
September10.31947-09-0614.8000
October-2.21947-10-215.5400
November-1.61947-11-084.0500
December-12.51947-12-210.01310