subtract 10%iles  1.07288e-05    0.0273318    0.0528755    0.0807571
     0.112980     0.152625     0.205811     0.286940     0.453604
diff 10%iles    -0.179430   -0.0893860   -0.0484390   -0.0213048   0.00111198
    0.0235291    0.0506773    0.0914001     0.180061
stardiff 10%iles   -0.0497203   -0.0240322   -0.0115666  -0.00270358
   0.00495687    0.0125965    0.0213585    0.0333819    0.0569713
stardiff contour -excluded 0.005   -0.0497203    0.0569713