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                                           Confidence Limits for Effective CONC
                                     4            95% Confidence Limits
                                                                                6
                                        Prob          CONC         Lower         Upper
                                         .05        .56647      -3.84770       2.85881
                                        .10       2.21580      -1.37804       4.16773
                                         .15       3.32860        .26074       5.07834
                                        .20       4.21301       1.53849       5.82675
                                        .25       4.97176       2.60978       6.49374
                                        .30       5.65314       3.54537       7.11917
                                        .35       6.28454       4.38361       7.72745
                                        .40       6.88368       5.14785       8.33582
                                        .45       7.46335       5.85394       8.95775
                                        .50       8.03383       6.51417       9.60447   5
                                        .55       8.60431       7.13957      10.28603
                                        .60       9.18399       7.74123      11.01239
                                        .65       9.78312       8.33117      11.79505
                                        .70      10.41452       8.92330      12.64945
                                        .75      11.09590       9.53492      13.59885
                                        .80      11.85465      10.19024      14.68180
                                        .85      12.73907      10.92882      15.96939
                                        .90      13.85186      11.83099      17.61662
                                        .95      15.50119      13.13222      20.09395
                                        .99      18.59506      15.51028      24.80387




                                       7        Probit Transformed Responses





                               2



                               1
                             Probit


                               0



                               -1



                                   2.50       5.00       7.50      10.00      12.50      15.00
                                                             CONC



                   #	$: ;Y;


                     1        !       Probit analysis  (" Probit model &6

                                         PROBIT  (p)       = Intercept     +  BX
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