From the timer ,average time is 40 minutes per container. A 1 (Afternoon round 1) takes time the most because A1 unload tires in the Dock 7 . Dock 7 is backup dock for unload tires because Dock 1 has broken and keep tires to sas 2 . While M1 (Morning round 1) takes less time because these tires in the dock 2 and keep tires to sas 1.