Illustration of the various categories of DIB extraction: a) detected; b) recovered; c) narrow; d) recovered and narrow; e) upper limit. APOGEE spectra are shown with solid black curves. The initial stellar model provided by APOGEE and the model obtained after application of the scaling factor are shown in solid blue and green respectively (note that in many cases they are very similar). The DIB absorption alone is represented in orange. The solid magenta curves represent the final stellar+DIB modeled spectrum.