subtract 10%iles  -0.00351644      0.00000    0.0146141    0.0416713
    0.0743296     0.117352     0.180184     0.290423     0.567526
diff 10%iles    -0.220846   -0.0885410   -0.0384252  -0.00946605      0.00000
   0.00699806    0.0355442    0.0851296     0.217759
stardiff 10%iles   -0.0336899   -0.0117234  -0.00347881      0.00000
  0.000535220   0.00503188    0.0105520    0.0191879    0.0403348
stardiff contour -excluded 0.005   -0.0336899    0.0403347