Upper panel: survival probabilities for He, Ne, and O atoms on the trajectory reaching Earth in the perihelion in 2009 at 130° ecliptic longitude. Solid lines are for the velocity vector at infinity corresponding to the bulk flow of the gas as established by Bzowski et al. (2012) based on IBEX measurements, the broken lines illustrate the sensitivity of survival probabilities to the inflow parameters: they correspond to survival probabilities calculated for the NIS inflow vector as found by Witte (2004) based on GAS/Ulysses observations. Lower panel: ratios of survival probabilities to their mean values calculated from an 11-year interval ending at the detection time.