MPI signals from benzonitrile mapped against flight-time and reflection voltage. The signals (ion counts per 16 ns time bin) are indicated by red and white features, and the curved bands correspond to metastable dissociations in the FFR of the mass spectrometer. The simulated flight times for the metastable dissociations that agree best with the experimental bands are indicated by black dots and listed in Table C.3. Map (a) was recorded with the reflection voltage applied to Grid F in the mass spectrometer (see Fig. 1b), whereas map (b) was recorded with the reflection voltage applied to Grid G.