Morphine      N  .04  .20  .10  .08 
   Morphine      N  .02  .06  .02  .02 
   Morphine      N  .07 1.40  .48  .24 
   Morphine      N  .17  .57  .35  .24 
   Morphine      Y  .10  .09  .13  .14 
   Morphine      Y  .12  .11  .10  .09 
   Morphine      Y  .07  .07  .06  .07 
   Morphine      Y  .05  .07  .06  .07 
   Trimethaphan  N  .03  .62  .31  .22 
   Trimethaphan  N  .03 1.05  .73  .60 
   Trimethaphan  N  .07  .83 1.07  .80 
   Trimethaphan  N  .09 3.13 2.06 1.23 
   Trimethaphan  Y  .10  .09  .09  .08 
   Trimethaphan  Y  .08  .09  .09  .10 
   Trimethaphan  Y  .13  .10  .12  .12 
   Trimethaphan  Y  .06  .05  .05  .05