Ranking Every Floor of Mather By Its Z Axis

#1: Floor 19
#2: Floor 18
#3: Floor 17
#4: Floor 16
#5: Floor 15
#6: Floor 14
#7: Floor 13
#8: Floor 12
#9: Floor 11
#10: Floor 10
#11: Floor 9
#12: Floor 8
#13: Floor 7
#14: Floor 6
#15: Floor 5
#16: Floor 4
#17: Floor 3
#18: Floor 2
#19: Floor 1
#20: Basement