A shovel having a $5-$cy bucket whose cost per hour, including the wages to an operator is $$96,$ will excavate well$-$blasted rock and load haul units under each of the stated conditions. The baseline cycle time for this shovel is $23$ sec$.$ The maximum digging height of the machine is $35$ ft$.$ Determine the cost per cubic yard for each condition. Use the average fill factor. Condition$12$Height of excavation $($ft$)1024$Angle of swing $($degrees$)60120$Efficiency factor $($min$-$hr$)4530$

What is the height$-$swing angle factor?