subtract 10%iles  -0.00159645   0.00801086    0.0167694    0.0266161
    0.0390439    0.0562706    0.0826311     0.129488     0.247122
diff 10%iles    -0.116741   -0.0521507   -0.0265708   -0.0113277  0.000797272
    0.0129099    0.0283093    0.0544720     0.120786
stardiff 10%iles   -0.0321384   -0.0163475  -0.00840216  -0.00244605
   0.00281834   0.00803149    0.0138633    0.0217769    0.0380954
stardiff contour -excluded 0.005   -0.0321384    0.0380954