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Table 2

Magnetic observatories used in the study. The fifth column refers to the interval in which the magnetic latitude is included according to 2000–2015 IGRF models during the period analysed.

Observatory name IAGA code Geographic latitude (°) Geographic longitude (°) Magnetic latitude (°) UT–MLT (h)
San Pablo–Toledo SPT 39.55 355.65 42.5 ± 0.5 −0.29
Surlari SUA 44.68 26.55 42.0 ± 0.5 +1.77
Irkutsk IRT 52.27 104.45 42.0 ± 0.5 +6.96
Memambetsu MMB 43.91 144.19 35.5 ± 0.5 +9.61
Fresno FRN 37.09 240.28 43.0 ± 0.5 −7.98
Stennis Space Center BSL 30.35 270.36 39.5 ± 0.5 −5.98

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