Fig. 6 The same as for Fig. 5 for dual probes near a wetting front. Bounds on fractional errors in 
, 
, and C are 1, 
, and respectively as z0/
0
Fig. 6 The same as for Fig. 5 for dual probes near a wetting front. Bounds on fractional errors in , , and C are 1, , and respectively as z0/ 0