28o 



ZONES AND REGIONS [Pt. Ill, Sect. I 



Tropical Grassland Climate. 



WEST AFRICAN SAVANNAH (LOANGO, CHINCHOSHO). 



5° 9' S., 12 4' E., 12 meters above sea-level. 2 years. 



(After Danckelmann, op. cit.) 



The rainfall is extraordinarily variable, and in some years has apparently been as low 

 as 200 mm., but accurate observations are not forthcoming. Heavy dews in the dry season 

 often correspond to a precipitation of 3 mm. 



WEST AFRICAN SAVANNAH (CONGO, SAN SALVADOR). 



6° 17' S., 14° 53' E., 579 meters above sea-level (high plateau). 

 (From Meteorol. Zeitschr., 1888, p. 394.) 



Cloudiness = 2 and less. 



2 Cloudiness = 8 or more. 



