CSV files are generated every 24 hours. They start with a header that
looks like this:

    tileX,tileY,createTime,modifyCount,modifyTime,accessCount,accessTime

Some peculiarities in the data:

 - createTime of 1: it was a boolean before 2018-07-30.
 - modifyTime with modifyCount of 0: counts were added 2018-07-31.
 - modifyTime with no accessTime: the two were split 2018-08-02.

An easy way to poke at the data is with SQLite:

    .mode csv
    .import torus.csv torus
    SELECT * FROM torus;