* yi *  p(yi)    p(o1/yi) 
-----------------------------
   2.5000   0.2900  18.7500
  10.0000  11.4555  22.6266
  20.0000  14.3194  29.8734
  30.0000  34.1852  28.3139
  40.0000  16.0595  32.5056
  50.0000  16.7482  39.1775
  60.0000   2.2838  47.6190
  70.0000   1.4501  76.2500
  80.0000   0.1269  57.1429
  90.0000   0.0181   0.0000
  97.5005   3.0633  81.0651
   ****calibration refinement