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Table 3 Mean nighttime (22–02 LT) and mean daytime (10–14 LT) values of B0D in [km/100 s.f.u.] averaged over the three seasons.

From: Local empirical model of ionospheric plasma density derived from Digisonde measurements at Irkutsk

Season Nighttime Daytime
  Irkutsk LEMI IRI prediction for Irkutsk Millstone Hill Irkutsk LEMI IRI prediction for Irkutsk Millstone Hill
Winter 18 11 15 15 14 15
Equinox 19 12 15 19 22 15
Summer 28 12 30 20 48 20