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BELL SYSTEM TECHNICAL JOURNAL 



100 seconds (L/lOO), the per cent of time locked out, or locked out time 

 in seconds per 100 seconds (LT/lOO), the number of repetitions per 100 

 seconds (i?/100), and the number of repetitions per 100 seconds cor- 



TABLE II 



rected for seasonal variations (R'/lOO). These rates are obtained by 

 dividing the total number of occurrences, or locked out time by the total 

 duration for each test condition. 



Effect of Lockout on Repetition Rate 

 It would be reasonable to expect that the repetition rate would de- 

 pend not only on the lockout rate, but also on the duration and type of 

 lockout. Considering the data as a whole there does not appear to be 



