Table 5.

Longitudinal migration coefficient (D) under different F-T cycles.

F-T Cycles	Soil Column Length (cm)	Pore Water Velocity (cm/min)	${\mathit{T}}_{0.16}$ (min)	${\mathit{T}}_{0.5}$ (min)	${\mathit{T}}_{0.84}$ (min)	D $({\mathbf{cm}}^2/\mathbf{min})$
0	20	0.0222	352	409.5	532	0.004874
3	20	0.0337	308	337.5	456	0.009231
7	20	0.0427	262	290.5	431.5	0.022540
14	20	0.0829	224	251	343	0.045466
30	20	0.1284	186	206	265	0.073590
90	20	0.1389	190	209	295	0.112985