5 +-----------------------------------------------------------------------------------------+   
      |          +           +          +          +          +           +          +       ** |   
      |                                                                                   ***   |   
      |                                                                                 **      |   
  4.5 |-+                                                                            ***      +-|   
      |                                                                            **           |   
      |                                                                          **             |   
      |                                                                       ***               |   
      |                                                                     **                  |   
    4 |-+                                                                ***                  +-|   
      |                                                                **                       |   
      |                                                             ***                         |   
      |                                                           **                            |   
  3.5 |-+                                                      ***                            +-|   
      |                                                     ***                                 |   
      |                                                   **                                    |   
      |                                                ***                                      |   
      |                                              **                                         |   
    3 |-+                                         ***                                         +-|   
      |                                         **                                              |   
      |                                      ***                                                |   
      |                                    **                                                   |   
  2.5 |-+                               ***                                                   +-|   
      |                               **                                                        |   
      |                             **                                                          |   
      |                          ***                                                            |   
      |                        **                                                               |   
    2 |-+                   ***                                                               +-|   
      |                   **                                                                    |   
      |                ***                                                                      |   
      |              **                                                                         |   
  1.5 |-+         ***                                                                         +-|   
      |        ***                                                                              |   
      |      **                                                                                 |   
      |   ***                                                                                   |   
      | **       +           +          +          +          +           +          +          |   
    1 +-----------------------------------------------------------------------------------------+   
      1         1.5          2         2.5         3         3.5          4         4.5         5