Consumption   Trips
          0            3
         16.2          6
          0            1
          8.1          2
          0            1
          0            1 
          0            3
          0            2
          0            2
         12.15         4
         48.6          6
          8.1          3
          0            3
         30.375       21
          8.1          7
          0            1
          0            1
          0            3
         24.3         21
          0            7
          4.05         1
         12.15         5
         81           29
         10.125        5
          0            2
          2.025       11
          0            2
          0            2
          0            4      
         12.15         2