0 +
    |
    |
    |
    |
  5 +
    |
    |
    |
    |
 10 +
    |
    |
    |
    |
 15 +
    |
    |
    |
    |
 20 +
    |
    |
    |
    |
 25 +
    |
    |
    |
    |
 30 +
    |*
    |
    |
    |
 35 +
    |**
    |*
    |
    |**
 40 +**
    |*
    |*
    |*
    |
 45 +**
    |
    |
    |
    |
 50 +
    +---------+---------+---------+---------+---------+
NUMBER OF SCORES: 13, MEAN: 39.538460 +/- 3.774721