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Table 2 Daytime and nighttime annual mean of hmF2 (F10.7 = 140) in [km] and hmF2D in [km/100 s.f.u.] for different stations. The station coordinates are shown in parentheses. Dip is the magnetic field dip angle of the station.

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

Station Dip(°) Daytime Nighttime
   hmF2 (F10.7 = 140) h m F 2D hmF2 (F10.7 = 140) h m F 2D
Sodankyla (67N, 27E) 76 270 35 374 46
Moscow (56N, 37E) 71 268 46 374 50
Irkutsk (52N, 104E) 72 263 61 340 73
IRI prediction for Irkutsk   272 66 331 36
Slough (52N, 1W) 67 258 48 378 43
Millstone Hill (43N, 288E) 70 265 46 333 33
Wallops Is (38N, 75W) 70 268 44 348 37
Wakkanai (38N, 142E) 51 272 57 366 56
Norfolk Is (29S, 168E) 56 282 45 340 38
Mundaring (32S, 116E) 66 275 38 338 33
Kerguelen (49S, 70E) 67 297 40 340 48
Port Stanley (52S, 58W) 47 261 61 387 55