Simple:
max_offset
 1600 ++----------+----------+-----------+-----------+----------+----------++
      +           +          +           +           +'/tmp/out.txt'******* +
 1400 ++                                                          *        ++
      |                                                           *         |
      |                                                           *         |
 1200 ++                                                          *        ++
      |                                                           *         |
 1000 ++                                                          *        ++
      |                                                           *         |
  800 ++                                                          *        ++
      |                             ******                        *         |
      |                             *     **********              *         |
  600 ++                            *              ***********    *        ++
      |                             *                        ******         |
  400 ++             *              *                                      ++
      |              ***********    *                                       |
      |              *         ******                                       |
  200 ++     *********                                                     ++
      + * ****    +  *       +           +           +          +           +
    0 *****-------+----------+-----------+-----------+----------+----------++
      0          100        200         300         400        500         600
                                   array_length
Better axes:
max_offset / array_length
 9 ++------+-------+-------+-------+--------+-------+-------+-------+------++
   +       +       +       +       +        +       +'/tmp/out2.txt'+****** +
 8 ++   *                                                                  ++
   |   * *                                                                  |
   |   * *                                                                  |
 7 ++ *   *                                                                ++
   | *    *                                                                 |
 6 +*      *                                                               ++
   |*       *                                                               |
 5 *+        *                                                             ++
   |          *                                                             |
   |           *                                                            |
 4 ++          *                                                           ++
   |            **                                                          |
 3 ++             *        *       *       **       *       *       *      ++
   |               **      **      **      ***      **      **      **      |
   |                 *     * *     * **    * **     ****    ****    *       |
 2 ++                 *   *   **   *  ***  *   **  *   **   *  ***  *      ++
   +       +       +   ** *+    ** *    ****+   ****+    ** *    ****       +
 1 ++------+-------+-----**+------**------**+-----**+------**------**------++
   1       2       3       4       5        6       7       8       9      10
                              log2( array_length)