subtract 10%iles  0.000132322   0.00808668    0.0148785    0.0218153
    0.0296516    0.0395761    0.0540628    0.0802250     0.152224
diff 10%iles   -0.0698276   -0.0332212   -0.0181475  -0.00785398   0.00100827
   0.00990486    0.0203795    0.0360451    0.0752831
stardiff 10%iles   -0.0324254   -0.0169777  -0.00886730  -0.00269226
   0.00282518   0.00837393    0.0146851    0.0233589    0.0417406
stardiff contour -excluded 0.005   -0.0324254    0.0417406