Date , Hour: AP# : Unique Devices per AP per Hour
$dateHour : $apMac : scalar(@uniqueMac)
2014-04-07, Hour 01: AP1 : 301
2014-04-07, Hour 01: AP2 : 313
2014-04-07, Hour 01: AP3 : 132
. . . every hour per day . . .
2014-04-07, Hour 21: AP1 : 130
2014-04-07, Hour 21: AP2 : 310
2014-04-07, Hour 21: AP3 : 13
. . . for every day . . .
2014-04-08, Hour 01: AP1 : 302
2014-04-08, Hour 01: AP2 : 321
2014-04-08, Hour 01: AP3 : 131
. . . every hour per day . . .
2014-04-08, Hour 22: AP1 : 122
2014-04-08, Hour 22: AP2 : 234
2014-04-08, Hour 22: AP3 : 311