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
1965.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-9.41965-01-21-2.22500
February-13.61965-02-10-7.12770
March-9.41965-03-011.81100
April-3.31965-04-025.0100
May1.61965-05-049.8000
June10.41965-06-1514.1001
July9.51965-07-1215.1001
August5.31965-08-2911.6000
September4.41965-09-1710.6000
October-3.81965-10-232.31600
November-10.21965-11-250.51310
December-5.61965-12-150.61200