subtract 10%iles      0.00000   0.00557923    0.0686684     0.138465
     0.227977     0.358797     0.569796     0.956089      1.88818
diff 10%iles    -0.407266    -0.175115   -0.0753080   -0.0172555      0.00000
    0.0143986    0.0703211     0.167913     0.400523
stardiff 10%iles   -0.0580020   -0.0210740  -0.00613666      0.00000
  0.000713825   0.00831984    0.0178723    0.0328735    0.0662866
stardiff contour -excluded 0.005   -0.0580020    0.0662866