subtract 10%iles  3.81470e-06   0.00572038    0.0103164    0.0147607
    0.0195994    0.0256033    0.0343704    0.0503941    0.0958767
diff 10%iles   -0.0393105   -0.0207615   -0.0119088  -0.00541401  0.000298738
   0.00599289    0.0124388    0.0212603    0.0399828
stardiff 10%iles   -0.0236877   -0.0136623  -0.00776464  -0.00311637
   0.00107002   0.00522407   0.00978816    0.0155935    0.0258918
stardiff contour -excluded 0.005   -0.0236877    0.0258917