0 +
    |
    |
    |
    |
  5 +
    |
    |
    |
    |
 10 +
    |*
    |
    |
    |
 15 +
    |
    |
    |
    |
 20 +*
    |*
    |
    |
    |
 25 +**
    |
    |**
    |*
    |
 30 +*
    |*
    |*
    |**
    |*
 35 +*
    |*
    |**
    |***
    |**
 40 +*
    |**
    |**
    |*
    |
 45 +
    |
    |
    |
    |
 50 +
    +---------+---------+---------+---------+---------+
NUMBER OF SCORES: 29, MEAN: 33.206898 +/- 7.581190