グラフ：各オペレーター基地局（日本）：ドコモ、KDDI、ソフトバンク、楽天
Graph: Each operator’s base station (Japan): Docomo, KDDI, Softbank, Rakuten
※参照元：令和４年９月末(２０２２年９月末)時点の基地局数、総務省の公開情報
*Reference source: Number of base stations as of (end of September 2022), information released by the Ministry of Internal Affairs and Communications
Webページ用画像：Posted in Teppei Log (https://teppeilog.com/)
Prepared by Teppei Nagumo (南雲鉄平)
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