Same as the top panel of Fig. 6, with errors introduced in the reconstruction parameters. Orange circles again show the points of Fig. 6, obtained with and i = 38°, i.e. our optimal model. Green and pale blue circles are obtained by forcing and 0.94, respectively, during reconstruction. Violet (resp. green) triangles show the effect of forcing i = 33° (resp. i = 43°). Crosses are obtained by adding another noise pattern to our fake data set (using a different seed to generate random numbers, still resulting in S/N ≈ 1000). Typical error bars are indicated in the top right side of the plot, except for violet and green triangles (affected by much larger statistical error bars that would hamper the plot readability).