Panel (a) shows the ( g − D51) vs. ( g − r) color–color diagram for the same 1-deg-square tile as shown in the previous figure, at galactic latitude b 10 5. Stars classified as giants (with log ( g) < 3.6) are indicated by red symbols, and dwarfs (with larger log ( g)) are plotted in black. Panel (b) is similar to the above, but shows a ( J − K) vs. ( g − i) color–color diagram for the same tile. The meaning of the symbols is the same.