Table B1
Geographic and magnetic location of magnetic observatories in the analysis of the historic events (Table 1). The fifth column refers to the magnetic latitude according to the IGRF model available closest of the year of the event (when several periods are involved, the magnetic latitude range is given). Column 6 gives information to transform from Universal Time to Magnetic Local Time.
| Observatory name | IAGA code | Geographic latitude (°) | Geographic longitude (°) | Magnetic latitude (°) | UT-MLT (h) |
|---|---|---|---|---|---|
| Apia | API | −13.80 | 188.22 | −16.0 | −11.45 |
| Ashkhabad | ASH | 37.95 | 58.10 | 30.3 | +3.87 |
| Boulder | BOU | 40.14 | 254.76 | 48.8 | −7.02 |
| Coimbra | COI | 40.22 | 351.58 | 44.9 | −0.56 |
| Colaba | CLA | 19.06 | 72.35 | 9.9 | +4.82 |
| Cuajimalpa | CUA | 20.53 | 259.47 | 29.9 | −6.70 |
| Eskdalemuir | ESK | 55.32 | 356.80 | 58.0 ± 0.1 | −0.21 |
| Fredericksburg | FRD | 38.20 | 282.63 | 48.8 | −5.16 |
| Fresno | FRN | 37.09 | 240.28 | 43.6 | −7.99 |
| Greenwich | GRW | 51.48 | 0.00 | 54.1 ± 0.1 | 0.00 |
| Hartland | HAD | 51.00 | 355.52 | 54.4 | −0.30 |
| Hermanus | HER | −34.43 | 19.23 | −33.4 ± 0.1 | +1.28 |
| Hurbanovo | HRB | 47.86 | 18.19 | 47.1 | +1.21 |
| Kakioka | KAK | 36.23 | 140.18 | 26 ± 0.3 | +9.35 |
| Kew | KEW | 51.28 | 359.41 | 54.1 | −0.04 |
| Memambetsu | MMB | 43.91 | 144.19 | 34.5 ± 0.2 | +9.61 |
| Mauritius | MRI | −20.08 | 57.55 | −26.4 | +3.84 |
| Paramaribo | PAB | 5.82 | 304.78 | 16.9 | −3.68 |
| San Fernando | SFS | 36.67 | 354.06 | 41 | −0.40 |
| SanJuan | SJG | 18.11 | 293.85 | 29.5 | −4.41 |
| San Pablo-Toledo | SPT | 39.55 | 355.65 | 43.2 ± 0.2 | −0.29 |
| Tbilisi | TFS | 42.08 | 44.70 | 36.4 | +2.98 |
| Tihany | THY | 46.90 | 17.89 | 45.8 | +1.19 |
| Tucson | TUC | 32.18 | 249.27 | 40.3 | −7.38 |
| Vieques | VQS | 18.15 | 294.55 | 29.4 | −4.36 |
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