CH, CO and OH equivalent width contribution functions in 3D (solid lines) and and 1D (dashed lines) calculated for lines with different excitation potentials in the d3t63g40mm30n02 atmosphere. A(C)_3D = A(C)_1D,LHD = 6.80 dex with A(O)_3D = A(O)_1D,LHD = 6.20 dex (black) and 7.47 dex (blue). The oxygen abundance does not affect 1D CH contribution function. The panels marked with a star are also depicted as horizontal bars in Fig. 1.