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
1993.m_tnnm_tnndm_tnam_dtn0m_dtn10m_dtn20
January-17.31993-01-06-5.12570
February-16.51993-02-01-6.42860
March-13.91993-03-06-0.62010
April-3.21993-04-025.1400
May7.01993-05-0110.8000
June8.11993-06-2913.1000
July6.41993-07-0913.6000
August6.91993-08-3014.1000
September5.51993-09-0710.5000
October-1.81993-10-317.6500
November-12.11993-11-22-1.82110
December-8.51993-12-03-0.91600