new_contents: import numpy as np
  import pylab as pl
  import sys
  
  filename = sys.argv[1]
  dtypes = {'names': ('date', 'value', 'unit'),
            'formats': ('f8', 'f4', 'S1')}
  data = np.loadtxt(filename,
                    delimiter=",",
                    dtype=dtypes,
                    unpack=True)
  
  date = data['date']
  date -= date[0]
  scale = 60
  date /= scale
  pl.plot(date, data['value'], '.')
  pl.xlabel("time (min)")
  # pl.xlabel("time (h)")
  pl.ylabel("thermistor resistance")
  pl.show()
  
subject: add quick plotting script