DIFFERENT WINDS AT TORONTO. 15 



N, = 0.91; S, = 0.49; E, = 0.65; Wa = 2.24; 

 N,= 1.01; 87 = 0.91; E, = 0.70; W, = 1.39; 



Again, if the durations of the winds in the northern and in the 

 western groups be compared with those of the groups diametricallj 



opposite, and (g ] be employed to denote the ratio whose first term is 



the duration of the winds from the three points about north, the ratios 

 between the other groups being expressed in an analogous manner, we 

 have 



Winter (|)^= 1. 94; (1)^=1. 36; (1)^=2. 18; (f)^= 2.25; 



Summer =1.04; =1.22; =0.63; =1.13; 



Year =1.34; =1.30;* =1.25; =1.59; 



DIURNAL DISTRIBUTION OF THE DIFFERENT WINDS WITH RESPECT 

 TO DURATION. 



The comparative durations, for each hour, of the sixteen winds and 

 the calms are obtained by dividing the absolute duration of each wind 

 in the hour by the average duration of all winds, including calms, iu 

 the same hour. The results are given in table VIII. 



From this table the following facts may be gathered : 



I. The durations of the winds from W.S.W. to N.N.W. inclusive^, 

 for each hour separately, as well as for all hours collectively, are above 

 the average duration of all winds. 



II. The durations of winds from E. to E.N.E., taking the twenty- 

 four hours collectively, are above the average ; and excepting from 

 2 A.M. to 3 A.M., one or other or both of these winds are above the 

 average at all hours. 



III. The durations of the north winds are above the average for the 

 whole day collectively, and have a marked diurnal period, their dura- 

 tions being above the average duration of all winds from 9 p.m. to 

 9 A.M., and below the average from 9 P.M. to 9 a.m. 



IV. The south winds have a duration less than the average of all 

 winds, taking one hour with another, and they also have a diurnal 

 period, their durations being above the average duration of all winds 

 from 10 A.M. to 6 p.m., and below the average during the rest of the 

 twenty-four hours. 



