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. Author manuscript; available in PMC: 2012 Mar 21.
Published in final edited form as: Phys Med Biol. 2011 Feb 18;56(6):1563–1584. doi: 10.1088/0031-9155/56/6/004

Table 1.

R-squared error of fitted Gaussian curves in figure 20.

Distance from cathode plane
(subplot a) (mm)		 R2 error Distance from cathode plane
(subplot b) (mm)		 R2 error
0.1 0.9358 0.2 0.9561
1.0 0.9251 0.7 0.8951
2.0 0.9348 1.2 0.9434
3.0 0.9511 1.7 0.9690
4.0 0.9627 2.2 0.9630