Top row: temperature-dependent rate coefficients for de-excitation transitions induced by collisions with electrons within Λ-doublet levels of the CH ground ²Π_1/2, N = 1, J = 1/2 and rotationally excited ²Π_3/2, N = 1, J = 3/2 states. The solid and dashed curves mark the main and satellite lines within the two states, respectively. Middle and bottom rows: same as the top row but for the rotational transitions connecting the ²Π_3/2, N = 1, J = 3/2 →² Π_1/2, N = 1, J = 1/2 and the ²Π_1/2, N = 2, J = 3/2 →² Π_1/2, N = 1, J = 1/2 levels, respectively.