C₂ DIB at 4963 Å vs. N(H I), E(B−V), N(Na I), N(K I), N(H₂), and N(CH). Circles denote LMC sight lines; triangles denote SMC sight lines; all other symbols are for Galactic sight lines (see Fig. 8). The solid lines show weighted and/or unweighted fits to the Galactic data (omitting "discrepant" sight lines). In most cases, the 4963 Å DIB is as strong toward Sk 143 (SMC) and Sk −67 2 (the two Magellanic Clouds stars with detected CN) as it is in comparable Galactic sight lines.