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
1942.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-29.11942-01-24-12.530210
February-15.11942-02-13-6.82680
March-6.81942-03-14-0.92100
April-5.01942-04-015.8100
May4.01942-05-0212.2000
June8.41942-06-1714.9001
July11.71942-07-3015.6001
August10.61942-08-0915.8000
September8.81942-09-1814.3000
October0.21942-10-207.1000
November-6.11942-11-261.11400
December-7.41942-12-05-0.92000