Details of the MPI peaks from benzonitrile with nearest-integer m/z values of 26, 77, and 88. The experimental data points are shown in blue and the Gaussian fits in green. (a) The fitted center (m/z 26.012 ± 0.005) indicates that C₂H₂^•+ (26.016) dominates over any CN^••+ (26.003). (b) The fitted center (m/z 77.040 ± 0.005) indicates that C₆H₅⁺ (77.039) dominates over any C₅H₃N^•+ (77.027). (c) The fitted center (m/z 88.015 ± 0.005) indicates that C₆H₂N⁺ (88.019) dominates over any C₇H₄^•+ (88.031).