subtract 10%iles  5.14984e-05   0.00611115    0.0110779    0.0159874
    0.0214534    0.0283666    0.0384603    0.0563354     0.103283
diff 10%iles   -0.0458879   -0.0231600   -0.0130939  -0.00596809  0.000211239
   0.00634146    0.0133572    0.0232544    0.0459566
stardiff 10%iles   -0.0248444   -0.0140592  -0.00790441  -0.00310548
   0.00118852   0.00542548    0.0100757    0.0160326    0.0268262
stardiff contour -excluded 0.005   -0.0248444    0.0268262