1x10
8
1x10
9
1x10
10
1x10
11
1x10
12
-4000
0
4000
8000
12000
16000
20000
LMS
Anomalous Sigma xx (S/m)
Least Median of Squares (k,l,m) = (1,3,3)
No Pin
Pinned
Fig. 4.24 Comparing the inverse-quality metric for the LMS-estimator when applied to cell
(1,3,3). The curve labeled ‘No Pin’ is for the condition in which the currents in the zeroth layer are
not forced to zero, and the other curve is for the condition in which the currents are forced to zero
1x10
9
1x10
10
1x10
11
1x10
12
-4000
0
4000
8000
12000
16000
20000
LMS
Anomalous Sigma xx (S/m)
Least Median of Squares (k,l,m) = (3,3,3)
No Pin
Pinned
Fig. 4.25 Comparing the inverse-quality metric for the LMS-estimator when applied to cell
(3,3,3). The curve labeled ‘No Pin’ is for the condition in which the currents in the zeroth layer are
not forced to zero, and the other curve is for the condition in which the currents are forced to zero
1x10
7
1x10
8
1x10
9
1x10
10
1x10
11
-4000
0
4000
8000
12000
16000
20000
Median of Squares
Anomalous Sigma xx (S/m)
Median of Squares (k,l,m) = (1,3,3) or (3,3,3)
Cell (3,3,3)
Cell (1,3,3)
Fig. 4.26 The inverse-quality metric for the LMS-estimator when applied to cells (3,3,3) and
(1,3,3) under the conditions that we pin all x currents in layers 0 and 2 and all y currents in layers
0, 1 and 3 to zero