$3\mathrm{.}4-11.$ Larry Edison is the director of the Computer Center for Buckly College. He now needs to schedule the staffing of the cen$-$ ter. It is open from $8$ A$.$M$.$ until midnight. Larry has monitored the usage of the center at various times of the day, and determined that the following number of computer consultants are required: Minimum Number of Consultants Required to Be on Duty Time of Day $8$ A$.$M$.-$noon Noon$-4$ P$.$M$.4$ P$.$M$.-8$ P$.$M$.8$ p$.$M$.-$midnight $48106$