64seconds
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1 to 4 have 3floors = 48 sec
" {$ i t0 K; {# k3 j' B* \tvb now,tvbnow,bttvbavg. 48/3 = 16sec5.39.217.76 S# v$ a- W- d. R2 u5 K5 p) b
* W; N! F) k) i9 u0 W
4 to 8 have 4floors = 16x4
- k( h; k7 h0 ]- u, S4 t$ y= 64secs |