subtract 10%iles  3.24249e-05   0.00637388    0.0118618    0.0174651
    0.0238018    0.0318832    0.0438576    0.0661688     0.129948
diff 10%iles   -0.0519238   -0.0260823   -0.0146561  -0.00658083  0.000432968
   0.00742912    0.0154839    0.0269341    0.0531788
stardiff 10%iles   -0.0253830   -0.0142303  -0.00783607  -0.00284658
   0.00162537   0.00605656    0.0109274    0.0171779    0.0284812
stardiff contour -excluded 0.005   -0.0253830    0.0284812