NUMBER OF TRANSMISSIONS PER MINUTE VS TIME OF DAY 





CO 



o 



O 



W 

 CQ 



;3 



3 



PERIOD 



ALL 



Figure 15. A comparison of the average number of transmissions per minute for each 6- 

 hour summary period for PTTs #823, #825, #827 and #831. Error bars indicate one 

 standard deviation. 



33 



