Calculated [OI] red-doublet (6300+6364 Å) and 5577 Å line brightness profiles (with solid curves) along the cometocentric projected distances on comet C/2006 W3 (Christensen) with H₂O production rate of 2 × 10²⁸ s^-1 and 42% CO₂ and 98% CO relative abundances with respect to H₂O in the cometary coma when the comet was at 3.13 au from the Sun. The calculated G/R ratio profiles considering CO, without considering CO, and without quenching are plotted with dashed, dotted, and dash-dotted curves, respectively, on the right y-axis.