subtract 10%iles  -0.00184536   0.00398207   0.00884628    0.0138979
    0.0197034    0.0274992    0.0399542    0.0637503     0.128235
diff 10%iles   -0.0479565   -0.0231667   -0.0129614  -0.00590515  0.000174999
   0.00626087    0.0132718    0.0233154    0.0460968
stardiff 10%iles   -0.0257340   -0.0137827  -0.00765348  -0.00303053
   0.00107626   0.00517501   0.00976856    0.0158408    0.0275005
stardiff contour -excluded 0.005   -0.0257340    0.0275005