184 Transactions of the South African Philosophical Society. 



TABLE 7. 



Means of Cloud Peecentage during the Passage of a 



Depression. 





Averages. 



Deviation from the Normal. 



Hour. 



Day 

 Before. 



Day. 



Day 

 After. 



Day 

 Before. 



Day. 



Day 



After. 



VIII 



XI 



XIV 



XVII 



/o 



29 

 25 

 40 

 35 

 33 

 34 



% 



41 



37 

 51 

 40 

 33 



27 



% 



27 

 26 

 26 

 22 

 13 

 8 



% 





 - 3 

 + 3 





 + 6 

 + 11 



% 



+ 12 

 + 9 

 + 14 

 + 5 

 + 6 

 + 4 



% 



- 2 



- 2 

 -11 

 -13 



XX 



-14 



XXIII 



-15 





33 



38 



20 



+ 3 



+ 8 



-10 



TABLE 8. 



Total Hourly Eain Frequency during the Passage 

 of 105 Depressions. 



Hour Ending 



Day Before. 



Day. 



Day After. 





Times. 



Times. 



Times 



I 



4 



4 



4 



II 



3 



2 



3 

 3 



3 



Ill 



3 



IV 



1 



3 



3 



V 



— 



4 



4 



VI 



2 



3 



3 



VII 



— 



3 



3 



VIII 



2 

 2 



3 

 3 







IX 



1 



X 



1 



2 



2 

 4 







XI 



— 





3 • 



3 



— 



XIII 



2 



6 



1 



XIV 



3 



8 



5 



6 



1 



XV 



1 



XVI 



6 

 4 



7 

 11 



2 



XVII 



3 



XVIII 



4 



5 



10 



9 



8 

 8 



2 



XIX 



1 



XX 



3 



XXI 



6 



7 



6 



XXII 



7 



5 



6 



XXIII 



3 



2 



8 

 6 



4 



Midnight 



2 





82 



124 



56 



