Hi everyone - thanks for the interest.
This is a freight line, so the trains do not run on a schedule. Instead, demand, crew availability and line capacity all play a complex role. And yet the distribution of minutes between trains seems to fall into a Poisson Curve shape (I do remember my sophomore stats a little bit).
Raw data: https://dl.dropboxusercontent.com/u/8515698/train/train.csv
These are timestamps representing a minute wherein a train horn was heard (what if 2 trains come at the same time? Counts as one so far as the rPi can tell - but doesn't happen often). Since data and time are unwieldy, I included the posix time column, which is the seconds since 1/1/1970. It is useful for calculating differences.
Moderators' note: Data also attached to this post below and to the top original post.
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