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
1915.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-11.51915-01-31-0.31310
February-14.51915-02-04-1.51360
March-6.31915-03-120.61300
April0.31915-04-025.9000
May5.21915-05-0511.4000
June10.21915-06-1616.1001
July11.51915-07-2016.2001
August9.61915-08-1712.9000
September3.61915-09-209.4000
October2.01915-10-257.4000
November-11.91915-11-290.61120
December-7.71915-12-222.1900