Abundance quotients calculated from various quantities discussed in the paper, divided by the flux quotient for the 2009 season, for all three pairs of NIS gas species. The figure illustrates the temporal evolution of the abundance quotients and differences between the quotients calculated using different definitions. Solid lines mark the NIS gas flow parameters obtained from IBEX (Bzowski et al. 2012), the broken line marks the flux quotient calculated for the gas inflow parameters obtained by Witte (2004) from GAS/Ulysses observations.