subtract 10%iles  4.95911e-05   0.00661325    0.0124450    0.0187728
    0.0266278    0.0375481    0.0546978    0.0871887     0.175433
diff 10%iles   -0.0641060   -0.0283391   -0.0151353  -0.00685596 -2.28882e-05
   0.00676727    0.0148907    0.0276346    0.0614796
stardiff 10%iles   -0.0294859   -0.0147564  -0.00797870  -0.00312126
   0.00111143   0.00532959    0.0101462    0.0168595    0.0312783
stardiff contour -excluded 0.005   -0.0294859    0.0312783