subtract 10%iles   0.00282145   0.00979733    0.0159750    0.0224664
    0.0301929    0.0403900    0.0554123    0.0817180     0.148543
diff 10%iles   -0.0428162   -0.0226431   -0.0131412  -0.00623703 -0.000206232
   0.00575352    0.0124550    0.0216236    0.0412335
stardiff 10%iles   -0.0268372   -0.0154573  -0.00892177  -0.00383382
  0.000697888   0.00515353    0.0100139    0.0162246    0.0275394
stardiff contour -excluded 0.005   -0.0268372    0.0275394