subtract 10%iles  7.53403e-05   0.00810051    0.0150046    0.0221653
    0.0304306    0.0410719    0.0566788    0.0843983     0.157403
diff 10%iles   -0.0703869   -0.0335464   -0.0182948  -0.00819969  0.000301361
   0.00882673    0.0190263    0.0346203    0.0727844
stardiff 10%iles   -0.0260321   -0.0139890  -0.00757025  -0.00272094
   0.00159563   0.00591952    0.0107830    0.0172756    0.0297788
stardiff contour -excluded 0.005   -0.0260321    0.0297788