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Fig. 3

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Coverage of the (R, z) Galactocentric cylindrical coordinate plane of the SDSS (blue dots and black contours) and 2MASS fields (grey dots and yellow contours). For the sake of producing this plot from SDSS fields we selected subgiants near the turnoff, and for 2MASS fields, K and M giants. In SDSS fields giants are located farther away but with lower densities.

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