Photoionization and electron impact ionization frequencies in the dayside ionosphere of Mars, calculated from MAVEN in situ data

The following data set contains valid photoionization frequencies and
electron impact ionization frequencies for the primary neutral species
CO2, O, CO, N2, and Ar in the dayside ionosphere of Mars, calculated from
MAVEN in situ data from November 1, 2014 until December 12,
2019.  It also contains necessary ancillary data, including Time
UTC, Mars season, solar zenith angle, spacecraft altitude, atmospheric
pressure, normalized on attenuated CO2 photoionization frequency (as a
proxy for solar activity), the neutral densities of the primary neutral
species, and the magnitude and elevation angle of a model magnetic field
calculated by Morschhauser et al. [2014] (DOI: 10.1002/2013JE004555) and
normalized to 400 km altitude.  It is the primary source for the
figures contained in the
manuscript 2021JE006923: "Ionization efficiency in
the dayside ionosphere of Mars: structure and variability", by Robert
J Lillis, Shaosui Xu, David Mitchell, Ed Thiemann, Frank Eparvier, Mehdi
Benna, Meredith Elrod.