PERCENTAGE OF ACTIVITY OCCURRING PERCENTAGE OF ACTIVITY OCCURRING 
THROUGH PASSAGE THROUGH PASSAGE 
SOCIAL MODIFICATION OF RELATIVE INTENSITY OF ACTIVITY 
SOCIAL PASSAGE USED 
RANK INTO FOOD PEN 
LOW NORTH (N0.7) 
HIGH SOUTH (NO.5) 
5-POINT MOVING TREND 
AVERAGE 
o 
POST MIDNIGHT ACTIVITY 
MAXIMUM 
MAXIMUM 
MAXIMUM 
10 20 30 10 20 30 9 19 
NOVEMBER DECEMBER JANUARY 
29 8 18 28 9 19 
FEBRUARY MARCH 
POST MIDNIGHT ACTIVITY 
MARCH APRIL MAY JUNE FEBRUARY MARCH 
Figure 94 - Social modification of the relative intensity of activity. The activity through only the north and south passages 
is here considered Thus the percentage of the total activity through one passage is the reciprocal of that through the 
other one Arrows indicate the times of maximum and minimum postmidnight activity as shown in figure 93. 
122 
