58 



BELL SYSTEM TECHNICAL JOURNAL 



iO B 3fl 16 20 25 30 35 40 45 50 55 60 



gb » 10 15 20 25 30 35 40 45 50 55 60 65 76 



A' = Defectives in Universe 



,V = 700, ;/ = 300 



CHARTS A 



