The INSET statement insets a table on the plot. The keywords MEAN and STD request that the mean and standard deviation display. FORMAT= specifies to use a format of field width 3. HEADER= displays a header at the top of the inset. POSITION= specifies to use axis percentage coordinates to position the inset. REFPOINT= specifies to place the bottom right corner of the inset 95% of the way across the horizontal axis and 5% of the way up the vertical axis. 
   inset mean std / format=3.0 header='Normal Parameters'
                    position=(95,5) refpoint=br;