The entire Delta history through 1995 is depicted rather compactly in bar-graph form in
 Figure 38. The solid-block portion of each bar indicates the number of launches during
 the calendar year for which vehicle performance was entirely normal, in so far as could
 be determined. The clear white parts forming the tops of most bars show the number
 of launches that were either failures or flights where the launch vehicle experienced
•some sort of anomalous behavior. Every launch with an entry in the response-mode
 column in Table 43 falls in this category. Such behavior did not necessarily prevent the
 attainment of some, or even all, mission objectives.

                       16

                       14

               en      12
               C:
              ·en0en
                       10
              ~
               <ti
              ::!:
                       8
              -
               Q)
              C
               0
               '-
               Q)
                       6
              .c
               E
               ::,
              z        4

                       2

                       0 '-----
                        55    60   65    70     75    80   85    90    95
                                        Launch Year
                              Figure 38. Delta Launch Summary




9/10/%                                        135                                    RT!