The thick green (gray) solid, thick blue (black) solid and thin black dashed ellipses indicate 1-sigma (68% CL) parameter constraints from the nulled power spectrum measures, bispectrum measures, and combined. Hidden parameters are marginalized over. The distance from the center of an ellipse to the black cross reflects the nulled bias on the corresponding parameter. The original biases from bispectrum measures can be seen in Fig. 6. The thin black solid ellipses over-plotted on to the centers of the nulled combined constraint ellipses indicate the statistical power (68% CL) of combined constraints before nulling. Note the different ranges of parameters compared to Fig. 6.