Citation:
Souto D, Cunha K, Smith VV, Allende Prieto C, arc\'ıa-Hernández D A, Pinsonneault M, Holzer P, Frinchaboy P, Holtzman J, Johnson J A, et al. Chemical Abundances of Main-sequence, Turnoff, Subgiant, and Red Giant Stars from APOGEE Spectra. I. Signatures of Diffusion in the Open Cluster M67. \apj. 2018;857 (1) :14.