Variability of Temperature. 



137 



At East London the variability of minimum temperature follows 

 the same rule as at Durban, being least in autumn and greatest in 

 spring; the spring values are, however, greater at East London than 

 at Durban, and the average variability for the year is also greater by 

 nearly half a degree. The variability of maximum temperature at 

 East London is, however, of quite a different character from that at 

 Durban, for it is least in summer and greatest in winter. Here, 

 again, we have a result due to the hot winds, which are frequent 

 at East London during the winter season. The average variability 

 of maximum temperature for the year at East London 4.1°, i.e., 

 nearly half a degree less than that of Durban. • The great,est monthly 

 value of maximum temperature variability at East London during 

 the ten years 1895-1904 is found in July, 1898, with 8.5°, August, 

 1897, coming next with 8.4°; the least is in March, 1895, with 1.9°. 

 The greatest monthly value of minimum temperature variability is 

 found in August, 1897, with 5.6°, the least in February, 1897, with 

 1.7°. 



At Kimberley the minimum temperature variability follows the 

 same rule as at Durban and East London, being greatest in October 

 and least in February and March. But the Kimberley maximum 



Table 3. — Variability of Temperature at Kenilworth 

 (Kimberley), 1896-1905. 



temperature variability differs from both. As at Durban, it is 

 greatest in October ; as at East London, it shews a drop in 

 December ; whereas its least value comes in April, that is, later than 

 it does at East London, but earlier than it does at Durban. Thus 



