subtract 10%iles  4.33922e-05   0.00611067    0.0112448    0.0164423
    0.0224626    0.0305996    0.0436869    0.0685139     0.127882
diff 10%iles   -0.0483131   -0.0241885   -0.0136280  -0.00615692  0.000324249
   0.00673771    0.0140402    0.0243473    0.0481730
stardiff 10%iles   -0.0260220   -0.0147386  -0.00827444  -0.00319962
   0.00133690   0.00579758    0.0106516    0.0168375    0.0280868
stardiff contour -excluded 0.005   -0.0260220    0.0280868