APEX spectrum of the CO (J = 3 → 2) emission in V605 Aql. The width of each channel is 20 km s^-1. The dotted vertical line corresponds to the systemic velocity relative to the local standard of rest of the PN A58, v_sys = 96 km s^-1, estimated by Clayton et al. (2013). The arrows indicate the rest frequencies for the CO (J = 3 → 2) and H¹³CN (J = 4 → 3) lines. The flux density in the right axis was calculated using the corresponding value of Γ, shown in Table 1.