subtract 10%iles  -0.00182533   0.00975037    0.0198059    0.0304909
    0.0431519    0.0596051    0.0832729     0.122791     0.211705
diff 10%iles   -0.0993748   -0.0480804   -0.0261002   -0.0115547  0.000626564
    0.0127983    0.0273438    0.0494156     0.100669
stardiff 10%iles   -0.0306943   -0.0169136  -0.00905461  -0.00296691
   0.00247012   0.00782443    0.0136946    0.0211379    0.0340407
stardiff contour -excluded 0.005   -0.0306943    0.0340407