Refer to the process flow diagram below. Station $3$ is $\_\_\_\_\_\_\_\_\_$blank from station $2.$

triangle labeled "waiting customers" followed by an arrow pointing to a rectangle "station $1".$ This is repeated twice.Refer to the process flow diagram below. Station $3$ is $\_\_\_\_\_\_\_\_\_$blank from station $2.$

triangle labeled "waiting customers" followed by an arrow pointing to a rectangle "station $1".$ This is repeated twice.