64seconds. L: j' X4 B8 h6 z; z) `
l# E- {/ l- ]5 v- I& d
1 to 4 have 3floors = 48 sectvb now,tvbnow,bttvb) Z" D6 A1 f' H$ _5 d ]9 v! Y4 v
avg. 48/3 = 16sec5.39.217.763 `2 {6 `8 l1 p4 I
tvb now,tvbnow,bttvb+ D m( V/ C: Y1 }+ U# a
4 to 8 have 4floors = 16x45.39.217.76$ H9 f! \, w- ~
= 64secs |