subtract 10%iles  0.000302315   0.00626945    0.0112550    0.0162206
    0.0218430    0.0292258    0.0407944    0.0633659     0.125023
diff 10%iles   -0.0437484   -0.0224323   -0.0127265  -0.00574875  0.000309467
   0.00628662    0.0130091    0.0222816    0.0429077
stardiff 10%iles   -0.0268671   -0.0150373  -0.00844341  -0.00334018
   0.00118186   0.00558910    0.0103783    0.0165181    0.0280133
stardiff contour -excluded 0.005   -0.0268671    0.0280133