| Category | Item Name | Item Title | Item | More Info. | 
                                            
                                 | D. Physiographic Features | D2 Climatic | Mean temp., Precip. (1961-1971) | afr-01-d2.txt |  | 
                    
                                 | E. Water Quality | E1 Transparency | Monthly, surface (1970) | afr-01-e1.txt |  | 
                    
                        |  | E2 pH | Monthly, surface (1970) | afr-01-e2.txt |  | 
                    
                        |  | E4 DO | Monthly, surface (1970) | afr-01-e4.txt |  | 
                    
                        |  | E7 Nitrogen | NO3-N, monthly (1970) | afr-01-e7.txt |  | 
                    
                        |  | E8 Phosphorus | PO4-P, monthly (1970) | afr-01-e8.txt |  | 
                    
                                 | F. Biological Features | F4 Biomass | Epipelic algae in the drying phase (1967, 1968); Biomass [mg (chlorophyll a), Blue-green algae almost 100% (1967-1968); Benthic habitats during the recovery phase, Area of habitat (1979) | afr-01-f4.txt |  | 
                    
                                 | G. Socio-economic Conditions | G3 Population | Number, Density, Major City (1977, 1979) | afr-01-g3.txt |  |