The Spectrum of Global Electron Content: A New Potential Indicator of Space Weather Activity. - Josep Maria Aroca-Farrerons; Manuel Hernández-Pajares; Haixia Lyu; David Roma Dollase; Raul Orus-Perez; Alberto García Rigo; Victoria Graffigna; Germán Olivares-Pulido; Enric Monte-Moreno; Heng Yang 005; Qi Liu 051 (Sensors, 2024)