ReadMe for road weather station observations
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Road weather station measurements are provided by Finnish Transport and Communication Agency (https://www.traficom.fi/en/)
with creative commons license 4.0 International (https://creativecommons.org/licenses/by/4.0/legalcode)

The file names are in the form rws_data_year1_year2.txt. There is a separate file for each winter period

File contains data for each station, which are separated by:
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StationID
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Data structure:
Column Variable
1      Time stamp (YearMonthDayTHourMinSec) (UTC)
2      Air temperature (C)
3      Surface temperature, sensor 1 (C) 
4      Surface temperature, sensor 2 (C) 
5      Precipitation intensity (mm/h)
6      Wind speed (m/s)
7      Relative humidity (%)