64seconds
( w* m: O; W" \+ Z! w
& N5 r y8 E1 F+ m. C5.39.217.771 to 4 have 3floors = 48 sectvb now,tvbnow,bttvb( d4 T; Z0 t5 Z. {2 X1 D7 U `2 O
avg. 48/3 = 16sec
7 ^# Q$ J8 |8 H4 S: w x1 i/ O5.39.217.77
' L5 ?7 d$ {4 C' [; O5.39.217.774 to 8 have 4floors = 16x4
9 E/ y) L C8 ?" v1 M= 64secs |