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
1969.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-18.01969-01-11-6.82690
February-17.21969-02-12-3.22030
March-4.01969-03-050.81500
April-2.41969-04-214.1600
May6.51969-05-2211.2000
June7.51969-06-0413.0000
July8.41969-07-1614.0000
August8.21969-08-2914.1001
September3.41969-09-2111.1000
October-0.51969-10-295.0100
November-5.31969-11-073.4500
December-12.91969-12-04-3.92820