Diameter of the Passage(cm) ΔS/S0     (ΔS/S0)/(1−(ΔS/S0 Δ
4 0 0 0
3 0.4375 0.777777778 1.3
2 0.75 3 4.2
1 0.9375 15 15.4
R= 0.997462