Analysis of H-Component of Geomagnetic Variation in Indonesian Region. - Nia Syafitri; Angga Yolanda Putra; Erlansyah; Muzirwan; Hadi Rasidi; Singgih Anggi Purnama; Helmi Suryaputra; La Ode Muhammad Musafar Kilowasid; Kuncoro Wisnu; Iskandar Bakri; Lambang Nurdiansah; Fitri Nuraeni; et al. (IC3INA, 2022)