186 Transactions of the South African Philosophical Society. 



TABLE 10. 



Hourly Means of Wind-velocity, in Miles per Hour, during 

 the Passage of a Depression. 



Hour Ending 



I 



II 



Ill 



IV 



Y 



VI 



VII 



VIII. ... 



IX 



X 



XI 



Noon . . . 



XIII. ... 



XIV. ... 

 XV 



XVI. ... 



XVII. ... 

 XVIII. 

 XIX. ... 



XX 



XXI. ... 

 XXII.... 

 XXIII. 

 Midnight 





Averages. 





Day 

 Before. 



Day. 



Day 

 After. 



M. per H. 



4-4 



M. per H. 



4-4 



M. per H. 



6-3 



4-4 



4-4 



6-1 



4-3 



4-5 



5-9 



4-2 



4-5 



5-9 



4-2 



4-4 



5-8 



4-5 



4-5 



5-7 



4-8 



5-1 



6-0 



5-6 



6-3 



6-5 



6-6 



8-4 



6-8 



7-8 



10-1 



7-1 



8-5 



11-0 



7-2 



8-6 



12-1 



7-4 



9-0 



12-9 



7-7 



8-9 



13-1 



8-0 



8-8 



13-1 



7-8 



8-5 



13-1 



7-6 



7-6 



12-6 



7-0 



6-4 



10-8 



6-4 



5-6 



9-0 



5-5 



5-1 



8-4 



5-6 



4-6 



7-9 



5-5 



4-5 



7-5 



5-6 



4-7 



6-7 



5-3 



4-6 



6-5 



5-5 

 6-4 



6-2 



8-4 



Deviation from the Normal. 



Day 

 Before. 



M. per H. 



-0-6 

 -0-5 

 -0-4 

 -0-4 

 -0-2 

 + 01 



o-o 



+ 0-1 

 + 0-1 



+ 0-6 

 +0-9 

 + 0-9 



+ 1-2 



+ 1-2 



+ 1-1 

 + 1-2 

 + 0-9 

 +0-6 

 + 0-4 

 -0-1 

 -0-7 

 -0-7 

 -0-5 

 -0-6 



+ 0-3 



Day. 



M. per H. 



-0-6 

 -0-5 

 -0-2 

 -0-1 

 0-0 

 + 0-1 

 +0-3 

 + 0-8 

 + 1-9 

 + 2-9 

 + 3-4 

 + 4-4 

 + 5-1 

 + 5-4 

 + 5-4 

 + 5-8 

 + 5-9 

 + 5-0 

 + 3-8 

 + 3-2 

 + 2-6 

 + 2-3 

 + 1-5 

 + 1-3 



+ 2-5 



Day 



After. 



M. per H. 



+ 1-3 

 + 1'2 

 + 1-2 

 + 1-3 

 + 1-4 

 + 1-3 

 + 1-2 

 + 1-0 

 +0-3 

 -0-1 

 -0-4 

 -0-3 

 -0-1 

 + 03 

 + 0-1 

 + 0-3 

 + 0-3 

 + 0-6 

 + 0-3 

 + 0-4 

 + 0-2 

 + 0-4 

 + 0-1 

 + 0-3 



+ 0-5 



