subtract 10%iles      0.00000   0.00403292    0.0395696    0.0790408
     0.125730     0.188742     0.286468     0.461923     0.893036
stardiff 10%iles    -0.432954    -0.171827   -0.0712402   -0.0146890
      0.00000    0.0187131    0.0769788     0.180392     0.444507
stardiff contour -excluded 0.005    -0.432954     0.444507