REVISION DATE: 12-Jan-2018 12:24:41

The graphs below show how I defined the tracks. Grey/green patches are what is averaged for each track.

 
Track pixels: 
Track:  1       2       3       4       5       6       7       8       9      10      11      12      13      14
Left:   3      81     156     230     302     375     446     519     590     662     734     806     880     955
Right:  80     155     229     301     374     445     518     589     661     733     805     878     953    1024

Figure 1

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Figure 15