Models of Saturn's Equatorial Ionosphere Based on In Situ Data From Cassini's Grand Finale. - Moore, L.; Cravens, T. E.; Müller‐Wodarg, I.; Perry, M. E.; Mitchell, D.; Waite, J. H.; Perryman, R.; Nagy, A.; Persoon, A.; Wahlund, J.‐E.; Morooka, M. W. (Geophysical Research Letters, 2018)