The KER-dependent ion sum-momentum (pz_sum) distributions of the denitrogenation (a) and deoxygenation (d) channels in elliptically polarized laser field, respectively. The red solid curves and blue filled squares in panels (a) and (d) represent the (pz_sum integrated) KER spectrum and (KER integrated) pz_sum distributions, respectively. The pz_sum distributions integrated over different KER ranges of the denitrogenation ((b), (c)) and deoxygenation ((e), (f)) channels (blue or red filled square) by gating the emission of the fragments N⁺ and O⁺ to +y or −y directions, respectively. The blue or red solid curves in panels (b), (c) and (e), (f) represent the fitting curves of the measured three peaks structure by using two Gaussians functions (see text).