subtract 10%iles  -0.00145578   0.00883484    0.0177679    0.0272498
    0.0385094    0.0532856    0.0747795     0.111069     0.194488
diff 10%iles   -0.0920219   -0.0439796   -0.0237970   -0.0105624  0.000488281
    0.0114822    0.0246048    0.0446916    0.0926514
stardiff 10%iles   -0.0307473   -0.0168929  -0.00907505  -0.00302749
   0.00234604   0.00761711    0.0133617    0.0206779    0.0336313
stardiff contour -excluded 0.005   -0.0307473    0.0336313