Line shape parameters for 2v3 Q branch manifolds of 12CH4 near 6000 cm−1 are obtained.
Temperature dependences of air- and self-broadened widths and shifts are reported.
Off-diagonal relaxation matrix element coefficients are measured for 15 transition pairs.
Widths, shifts and temperature dependences are compared to HITRAN2012 values.
Positions for 104 and intensities for 109 transitions are also obtained.