subtract 10%iles -0.000297070      0.00000    0.0197973    0.0511460
    0.0892096     0.138332     0.208177     0.325159     0.600770
stardiff 10%iles    -0.212887   -0.0926110   -0.0426065   -0.0122100
      0.00000   0.00458515    0.0332213    0.0821616     0.204033
stardiff contour -excluded 0.005    -0.212887     0.204033