194 Transactions of the South African Pliiloso])liical Society. 



TABLE 40. 



Mean Hourly Deviation, on Clear Days, from the Normal 

 Wind-Velocity, in Miles per Hour. 



For the 





























hour 



Jan. 



Feb. 



Mar. 



April. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



Year. 



ending 







0-8 



0-2 





0-2 



0-2 







0-4 









I 



0-3 



0-4 



0-0 



0-3 



0-0 



0-4 



0-7 



0-1 



II 



0-4 



0-3 



0-7 



0-2 



0-0 



0-1 







2 



0-4 



0-4 







6 







3 



0-6 



0-2 



Ill 



0-4 



0-2 



0-1 



0-0 



0-1 



0-2 







1 



0-5 



0-3 







7 







3 



0-5 



0-2 



IV 



0-4 



0-4 



0-3 



0-1 



0-4 



0-1 







2 



0-5 



0-2 







8 







4 



0-4 



0-3 



V 



0-8 



0-4 



0-5 



0-2 



0-4 



0-1 







3 



0-5 



0-1 







7 







4 



0-5 



0-3 



VI 



0-6 



0-3 



0-4 



0-0 



0-3 



0-4 







2 



0-6 



0-0 







2 







5 



0-1 



0-3 



VII 



0-8 



0-4 



0-5 



0-3 



0-5 



0-5 







3 



0-5 



0-6 







3 







5 



0-0 



0-4 



VIII. ... 



1-0 



0-3 



1-1 



1-1 



0-7 



0-6 







5 



0-6 



0-7 







3 



1 



5 



1-2 



0-7 



IX 



1-6 



0-1 



1-6 



1-7 



1-1 



1-0 







5 



0-8 



0-9 







9 



1 



8 



2-2 



1-2 



X 



2-1 



0-8 



1-8 



1-8 



1-5 



0-9 







8 



1-1 



1-2 







8 



2 



4 



2-7 



1-5 



XI 



1-8 



1-0 



1-8 



1-8 



1-4 



1-1 







7 



1-1 



1-3 



1 







2 







2-4 



1-6 



Noon. ... 



1-2 



0-7 



1-6 



2-1 



1-6 



1-1 







8 



1-2 



1-4 



1 



4 



1 



3 



1-6 



1-3 



XIII. ... 



0-9 



0-3 



0-8 



2-0 



1-6 



0-9 







7 



1.2 



1-5 



1 



1 



1 



2 



1-4 



1-2 



XIV. ... 



0-6 



0-4 



0-9 



1-8 



1-3 



1-0 







7 



1-3 



1-5 



1 



3 



1 



] 



1-0 



1-0 



XV 



0-6 



0-7 



0-7 



1-7 



1-5 



0-8 







8 



1-3 



1-5 







9 







9 



0-7 



1-0 



XVI. ... 



0-7 



0-7 



0-8 



1-6 



1-4 



0-7 







7 



1-3 



1-3 



1 



2 







8 



1-3 



1-a 



XVII. ... 



0-2 



1-3 



0-9 



1-6 



1-0 



0-5 







7 



1-4 



1-2 



1 



3 



1 



4 



1-2 



1-0 



XVIII.... 



0-4 



1-0 



1-1 



1-4 



0-6 



0-4 







9 



0-9 



0-6 



1 



4 



1 



1 



0-9 



0-9 



XIX. ... 



0-2 



1-4 



0-8 



0-9 



0-4 



0-2 







8 



0-2 



0-5 







9 



1 



2 



1-4 



0-7 



XX 



0-5 



1-3 



0-0 



0-8 



0-4 



0-0 







3 



0-1 



0-2 







8 







8 



1-4 



0-6 



XXI. ... 



0-5 



0-8 



0-0 



0-8 



0-3 



0-4 







3 



0-3 



0-2 







6 







6 



1-2 



0-5 



XXII. ... 



0-2 



0-4 



0-3 



0-5 



0-4 



0-1 







4 



0-2 



0-2 







5 







2 



1-2 



0-3 



XXIII.... 



0-3 



0-6 



0-1 



0-0 



0-2 



0-1 







4 



0-0 



0-2 







6 







4 



0-6 



0-2 



Midnight. 



0-4 



0-4 



0-2 



0-2 



0-1 



0-2 



0-3 



0-1 



0-0 



0-4 



0-3 



0-2 



0-1 



Month.... 



0-7 



0-6 



0-7 



0-9 



0-7 



0-5 



0-5 



0-7 



0-6 



0-9 



0-9 



0-8 



0-7 



TABLE 41. 

 Mean Wind- Velocity on Cloudy Days. 



For the hour 

 ending 



Velocity. 



5-1 



5-0 



4-8 

 4-8 

 4-6 

 4-6 

 5-1 

 6-0 

 7-3 

 8-2 

 8-6 

 8-5 

 8-G 



i 

 Deviation 

 from the 

 Normal. 



For the hour 

 ending. 



Velocity. 



Deviation 

 from the 

 Normal. 



I 



II 



0-1 

 0-1 

 0-1 

 0-2 

 0-2 

 0-2 

 0-3 

 0-5 

 0-8 

 1-0 

 1-0 

 0-8 

 0-8 



XIV 



XV 



8-4 

 8-4 

 8-0 

 7-4 

 6-4 

 5-7 

 5-6 

 5-6 

 5-4 

 5-3 

 5-3 



6-4 



0-7 

 0*7 



Ill 



XVI 



0'7 



IV .... 



XVII 



0*7 



V 



XVIII 



XIX 



XX 



0*6 



VI 



0-5 



VII 



0*4 



VIII 



XXI 



XXII 



0*3 



IX 



0*2 



X 



XXIII 



Midnight 



Year 



0*1 



XI 



0-1 



XIII 



0*5 









