2 energy level fit to .01, .05 b1 data (1S-1S correlator only). E0 shown with priors varied by sqrt(2). SVD cut is 1e-7.

The same thing, but without normalizing the data correlation matrix before attempting to invert it. Two cases are shown... SVD cut of 1e-7 (small, constant errorbars on right points) and SVD cut of 1e-15.