Fig. 3.
Left panel: cumulative histograms of S/N per half-resolution element (approximately a pixel) for APOGEE (solid line) and S/N per pixel for LAMOST (dashed line), as provided from the original catalogs. Right panels: S/N from APOGEE and LAMOST spectra for the common objects as a function of the H-band magnitude from the 2MASS survey.
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