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Table 1 List of EMMA geomagnetic stations used for the plasmaspheric analysis

From: On some features characterizing the plasmasphere–magnetosphere–ionosphere system during the geomagnetic storm of 27 May 2017

Station Code CGM longitude (°) CGM latitude (°) L
Kevo KEV 108.3 66.7 6.5
Masi MAS 105.4 66.5 6.4
Kilpisjärvi KIL 102.3 66.2 6.3
Ivalo IVA 107.7 65.5 5.9
Muonio MUO 104.3 65.0 5.7
Sodankylä SOD 106.5 64.3 5.4
Pello PEL 104.1 63.9 5.3
Raniu RAN 105.5 62.8 4.9
Olujärvi OUJ 105.6 61.3 4.4
Hankasalmi HAN 104.1 59.0 3.8
Nurmijärvi NUR 101.8 57.2 3.5
Tartu TAR 102.6 54.8 3.1
Birzai BRZ 100.5 52.6 2.8
Suwalki SUW 98.6 50.1 2.5
Belsk BEL 95.6 47.7 2.3
Zagorzyce ZAG 95.4 45.9 2.1
Vyhne VYH 93.5 43.8 2.0
Tihany THY 92.4 41.9 1.8
Lonjsko Polje LOP 91.1 40.0 1.7
Ranchio RNC 86.7 38.1 1.7
L’Aquila AQU 87.5 36.2 1.6
  1. The corrected geomagnetic (CGM) coordinates and L values are evaluated at an altitude of 120 km for 1 January 2017