Stimulus amp. (V) 0.5 0.7 1.0 1.2 1.5 Ave. Std. dev.
VT1 x(μm)
        y (μm)
        z (μm)		 0.15
2.14
0.00 		3.24 
10.94
22.57		 -1.01
0.25
0.00 		0.21
1.08
6.31 		-0.96
3.78
13.50 		0.33
3.64
8.48 		1.73
4.29
9.65 
(μm) 2.15 25.29 1.04 6.41 14.05 9.23 =10.70
VT2 x(μm)
        y (μm)
        z (μm)		 0.53
0.85
0.00		 3.28
0.82
0.00		 -0.78
0.10
0.00		 0.82
-1.03
0.00		 0.47
-0.56
0.00		 0.86
0.97
0.00		 1.48
1.13
0.00
(μm) 1.91 4.14 0.79 0.84 0.54 1.30 =1.87
Table 2: Estimated source locations based on VT1 and VT2 data after correcting for inhomogeneity. The table setup is identical to that of Table 1.