90    100                          90    100
       80  \           110                80              110
            \
   70        \             120        70                      120
              \
 60            \             130    60                          130
                O                                  O
 50                          140    50              \           140
                                                     \
  40                        150      40               \        150
               mph                                mph  \
     30                  160            30              \   160
 This is your code on the VAX       This is your code on the SGI