columns in the trax_comp.csv file
%complete time string
%all times are local
%01:time
%02:year
%03:month
%04:day
%05:hr
%06:min
%07:lat of trax
%08:trax lon
%09:hawthorne 75% perctile for the day
%10:trax type for day 0 somewhere; 1 red; 2 green; 3 depot 4 no loc info
%11:distance on red
%12:distance on green
%13:whether at depot dps =0
%14:trx pm
%15:naa pm
%16:mtmet pm
%17:hawthorne pm
%18:train speed
%19:st to naa
%20:dist to mtm
%21:dist to haw
%22:pm diff rel to  naa
%23:pm diff rel to mtmet
%24:m diff rel to haw
%25:rh of envir
%26:diff in rh between env and esampler
%27:temp on train
%train speed (m/s)
%dist to naa (km)
%dist to mtm (km)
%dist to haw (km)
%pm diff rel to  naa
%pm diff rel to mtmet
%pm diff rel to haw
%rh of environ
%diff in rh between env and esampler
%temp on train (C)