subtract 10%iles  0.000925064    0.0131483    0.0239317    0.0352774
    0.0486784    0.0663967    0.0931206     0.141593     0.269094
diff 10%iles   -0.0717640   -0.0368690   -0.0209424  -0.00970030  2.86102e-05
   0.00974083    0.0209112    0.0366578    0.0711899
stardiff 10%iles   -0.0399258   -0.0213610   -0.0117486  -0.00460142
   0.00169036   0.00794297    0.0149314    0.0241869    0.0418165
stardiff contour -excluded 0.005   -0.0399258    0.0418165