NICT Ionospheric event

●過去４０日間に発生した電離圏イベント履歴（2025/06/23 21:00 更新）
・現在の電離圏概況（携帯版）はこちらを参照してください。
・現在の電離圏概況（簡易版）はこちらを参照してください。
・現在の電離圏概況（詳細版）はこちらを参照してください。
・観測生データ等はこちらを参照してください。
！注意事項！
・時刻は全てJST(UT+09)で表記されています。
・記載されている情報は全て自動生成されており,解析誤差が含まれる場合があります。
・強いスポラディックＥ層が発生した場合Ｅ層のマルチエコーとＦ層を混同し,電離層嵐と誤判定する場合があります。

◎宇宙環境研究室(電離圏ワーキンググループ)からのお知らせ
・アクセスが集中した際等にはサービスを停止させていただく場合があります。
・システムメンテナンス作業/機器故障等に伴いデータ更新に不定期な遅延を生じる場合があります。
・国内4観測地点の電離層観測装置は、以下の日時に新システム「VIPIR2型」に移行しました。
　　　　　稚内　　2016/05/13 00:00
　　　　　国分寺　2017/05/15 18:00
　　　　　山川　　2017/05/10 15:00
　　　　　大宜味　2017/05/17 16:15
　　　移行に伴い送受信機/受信アンテナ/データ処理が刷新されますので、
　　　旧来のイオノグラムとは見掛け/特性の異なる部分があります。
　　　また、自動読取値にも誤差が含まれることがあります。

==================================== 稚内(北海道) ====================================

電離層嵐継続期間	継続時間	中央値との最大差を観測した日時	中央値との最大差[MHz]	foF2[MHz]
2025/05/28 06:15 - 05/28 07:45	1:30	05/28 06:15	+15.3	21.7
2025/06/22 16:30 - 06/22 17:15	0:45	06/22 17:00	+8.0	14.7
2025/06/23 16:15 - 06/23 16:30	0:15	06/23 16:30	+12.2	18.9

ＳＩＤ/冬季異常継続期間	継続時間	中央値との最大差を観測した日時	中央値との最大差[MHz]	fmin[MHz]
2025/05/29 21:00 - 05/29 21:30	0:30	05/29 21:00	3.9	5.5

スポラディックＥ継続期間	継続時間	Ｅｓ層臨界周波数の最大値を観測した日時	fxEs[MHz]
2025/05/15 07:30 - 05/15 08:00	0:30	05/15 07:30	28.7
2025/05/15 09:15 - 05/15 09:45	0:30	05/15 09:45	13.2
2025/05/16 08:00 - 05/16 09:00	1:00	05/16 09:00	12.6
2025/05/17 08:15 - 05/17 09:15	1:00	05/17 08:45	12.0
2025/05/18 14:30 - 05/18 14:45	0:15	05/18 14:45	9.7
2025/05/19 10:30 - 05/19 11:30	1:00	05/19 10:30	29.9
2025/05/19 18:30 - 05/19 18:45	0:15	05/19 18:30	11.0
2025/05/19 19:30 - 05/19 20:45	1:15	05/19 19:45	18.1
2025/05/20 11:00 - 05/20 11:30	0:30	05/20 11:30	10.7
2025/05/20 16:45 - 05/20 17:00	0:15	05/20 17:00	8.3
2025/05/20 17:45 - 05/20 19:00	1:15	05/20 18:00	13.3
2025/05/22 09:30 - 05/22 09:45	0:15	05/22 09:30	9.6
2025/05/22 11:30 - 05/22 12:00	0:30	05/22 11:45	10.2
2025/05/23 07:15 - 05/23 09:15	2:00	05/23 07:30	11.5
2025/05/23 19:45 - 05/23 20:00	0:15	05/23 19:45	9.1
2025/05/24 19:15 - 05/24 19:45	0:30	05/24 19:15	9.4
2025/05/24 20:45 - 05/24 21:00	0:15	05/24 20:45	11.6
2025/05/26 08:45 - 05/26 10:30	1:45	05/26 08:45	27.0
2025/05/27 06:30 - 05/27 10:00	3:30	05/27 09:45	14.6
2025/05/27 14:00 - 05/27 14:30	0:30	05/27 14:30	20.5
2025/05/27 15:30 - 05/27 19:00	3:30	05/27 18:45	15.1
2025/05/27 19:45 - 05/27 21:00	1:15	05/27 20:00	13.2
2025/05/27 23:00 - 05/27 23:45	0:45	05/27 23:45	9.4
2025/05/28 06:00 - 05/28 08:00	2:00	05/28 07:00	13.6
2025/05/28 13:45 - 05/28 17:45	4:00	05/28 15:00	19.0
2025/05/28 18:30 - 05/28 19:30	1:00	05/28 18:45	11.6
2025/05/28 20:15 - 05/28 21:15	1:00	05/28 20:45	9.3
2025/05/30 14:15 - 05/30 16:00	1:45	05/30 15:15	14.2
2025/05/31 07:15 - 05/31 08:00	0:45	05/31 07:30	13.3
2025/05/31 19:45 - 05/31 21:00	1:15	05/31 20:00	11.6
2025/06/02 05:30 - 06/02 05:45	0:15	06/02 05:45	28.8
2025/06/02 07:30 - 06/02 08:00	0:30	06/02 07:30	8.9
2025/06/02 10:00 - 06/02 10:15	0:15	06/02 10:00	22.5
2025/06/02 11:45 - 06/02 12:30	0:45	06/02 12:30	12.5
2025/06/02 16:00 - 06/02 17:15	1:15	06/02 17:00	9.5
2025/06/04 12:15 - 06/04 12:30	0:15	06/04 12:30	10.4
2025/06/05 09:15 - 06/05 10:15	1:00	06/05 09:15	10.6
2025/06/05 20:45 - 06/05 21:15	0:30	06/05 20:45	11.5
2025/06/05 23:30 - 06/06 01:00	1:30	06/05 23:30	10.5
2025/06/06 06:30 - 06/06 14:15	7:45	06/06 12:30	30.0
2025/06/06 15:00 - 06/06 17:00	2:00	06/06 16:00	30.0
2025/06/06 18:15 - 06/06 19:30	1:15	06/06 19:30	11.7
2025/06/06 21:00 - 06/06 22:45	1:45	06/06 21:45	14.6
2025/06/07 07:30 - 06/07 08:15	0:45	06/07 08:15	13.1
2025/06/07 10:15 - 06/07 11:15	1:00	06/07 10:30	10.9
2025/06/07 13:15 - 06/07 13:45	0:30	06/07 13:45	29.8
2025/06/07 15:45 - 06/07 16:00	0:15	06/07 15:45	9.3
2025/06/08 07:00 - 06/08 11:45	4:45	06/08 11:00	15.2
2025/06/10 09:30 - 06/10 10:00	0:30	06/10 10:00	9.5
2025/06/10 11:00 - 06/10 14:00	3:00	06/10 13:00	20.7
2025/06/10 17:45 - 06/10 18:00	0:15	06/10 18:00	10.5
2025/06/10 18:45 - 06/10 19:45	1:00	06/10 18:45	12.7
2025/06/11 09:15 - 06/11 09:30	0:15	06/11 09:15	8.7
2025/06/12 08:45 - 06/12 09:00	0:15	06/12 09:00	8.4
2025/06/12 16:15 - 06/12 21:45	5:30	06/12 17:30	29.5
2025/06/13 06:30 - 06/13 07:15	0:45	06/13 06:45	10.3
2025/06/13 10:45 - 06/13 13:30	2:45	06/13 12:30	18.5
2025/06/14 13:15 - 06/14 18:45	5:30	06/14 18:15	16.0
2025/06/15 08:30 - 06/15 10:15	1:45	06/15 09:30	15.3
2025/06/16 07:30 - 06/16 08:30	1:00	06/16 07:30	12.7
2025/06/16 14:00 - 06/16 15:30	1:30	06/16 14:30	12.6
2025/06/16 18:15 - 06/16 19:15	1:00	06/16 18:30	9.4
2025/06/17 10:15 - 06/17 11:45	1:30	06/17 11:00	11.6
2025/06/17 19:45 - 06/17 20:15	0:30	06/17 19:45	11.4
2025/06/18 17:15 - 06/18 17:30	0:15	06/18 17:15	12.6
2025/06/18 19:00 - 06/18 19:30	0:30	06/18 19:30	14.9
2025/06/18 20:30 - 06/18 21:45	1:15	06/18 20:30	12.3
2025/06/20 09:15 - 06/20 09:30	0:15	06/20 09:15	10.4
2025/06/20 11:30 - 06/20 11:45	0:15	06/20 11:30	8.4
2025/06/21 08:45 - 06/21 09:30	0:45	06/21 08:45	13.3
2025/06/21 11:30 - 06/21 12:30	1:00	06/21 11:30	10.7
2025/06/21 14:00 - 06/21 14:15	0:15	06/21 14:00	25.8
2025/06/22 12:00 - 06/22 13:45	1:45	06/22 13:30	12.7
2025/06/22 14:45 - 06/22 17:00	2:15	06/22 15:45	19.0
2025/06/23 07:15 - 06/23 08:30	1:15	06/23 07:30	14.7
2025/06/23 12:00 - 06/23 12:15	0:15	06/23 12:15	8.7
2025/06/23 13:45 - 06/23 14:00	0:15	06/23 13:45	10.1
2025/06/23 15:45 - 06/23 21:00	5:15	06/23 19:30	27.5

==================================== 国分寺(東京) ====================================

電離層嵐継続期間	継続時間	中央値との最大差を観測した日時	中央値との最大差[MHz]	foF2[MHz]
2025/05/28 09:00 - 05/28 10:30	1:30	05/28 10:15	+13.4	20.9
2025/06/22 15:45 - 06/22 16:30	0:45	06/22 15:45	+9.0	16.9

ＳＩＤ/冬季異常継続期間	継続時間	中央値との最大差を観測した日時	中央値との最大差[MHz]	fmin[MHz]
2025/05/16 01:00 - 05/16 01:30	0:30	05/16 01:00	4.2	5.8

スポラディックＥ継続期間	継続時間	Ｅｓ層臨界周波数の最大値を観測した日時	fxEs[MHz]
2025/05/15 08:30 - 05/15 08:45	0:15	05/15 08:45	8.9
2025/05/15 17:00 - 05/15 17:30	0:30	05/15 17:00	11.3
2025/05/16 09:45 - 05/16 10:45	1:00	05/16 10:45	12.1
2025/05/16 11:45 - 05/16 12:00	0:15	05/16 11:45	9.0
2025/05/16 18:15 - 05/16 19:30	1:15	05/16 19:15	9.5
2025/05/17 07:15 - 05/17 07:45	0:30	05/17 07:15	21.4
2025/05/17 15:00 - 05/17 15:15	0:15	05/17 15:00	10.8
2025/05/17 19:00 - 05/17 19:30	0:30	05/17 19:00	10.4
2025/05/18 07:30 - 05/18 14:00	6:30	05/18 10:15	26.0
2025/05/18 21:00 - 05/18 21:45	0:45	05/18 21:00	9.2
2025/05/19 03:00 - 05/19 03:30	0:30	05/19 03:15	12.2
2025/05/19 09:15 - 05/19 09:30	0:15	05/19 09:30	11.7
2025/05/19 11:00 - 05/19 11:30	0:30	05/19 11:00	13.9
2025/05/19 22:00 - 05/19 22:15	0:15	05/19 22:15	9.2
2025/05/20 16:00 - 05/20 20:30	4:30	05/20 20:00	14.4
2025/05/21 07:45 - 05/21 13:30	5:45	05/21 12:15	21.7
2025/05/21 14:15 - 05/21 14:45	0:30	05/21 14:30	14.9
2025/05/21 17:30 - 05/21 19:45	2:15	05/21 18:30	21.9
2025/05/21 21:45 - 05/21 22:00	0:15	05/21 21:45	10.3
2025/05/21 23:00 - 05/22 01:15	2:15	05/21 23:00	13.2
2025/05/22 02:15 - 05/22 04:00	1:45	05/22 02:45	14.9
2025/05/22 07:45 - 05/22 08:45	1:00	05/22 08:00	13.1
2025/05/22 10:30 - 05/22 12:30	2:00	05/22 11:00	11.3
2025/05/22 14:00 - 05/22 16:30	2:30	05/22 15:15	14.2
2025/05/22 17:15 - 05/22 19:00	1:45	05/22 17:30	9.5
2025/05/22 23:30 - 05/23 00:30	1:00	05/22 23:30	12.1
2025/05/23 08:30 - 05/23 09:00	0:30	05/23 08:45	9.5
2025/05/23 11:45 - 05/23 12:00	0:15	05/23 12:00	8.3
2025/05/23 14:45 - 05/23 15:45	1:00	05/23 15:00	9.4
2025/05/23 18:45 - 05/23 19:00	0:15	05/23 18:45	9.3
2025/05/23 20:00 - 05/23 20:45	0:45	05/23 20:15	13.6
2025/05/24 00:30 - 05/24 00:45	0:15	05/24 00:30	14.9
2025/05/24 01:30 - 05/24 02:45	1:15	05/24 01:45	10.6
2025/05/24 03:30 - 05/24 04:45	1:15	05/24 04:30	13.3
2025/05/24 09:00 - 05/24 09:30	0:30	05/24 09:00	8.6
2025/05/24 12:30 - 05/24 12:45	0:15	05/24 12:45	11.9
2025/05/24 14:15 - 05/24 18:00	3:45	05/24 15:45	24.1
2025/05/24 22:15 - 05/24 23:30	1:15	05/24 22:15	15.7
2025/05/25 07:00 - 05/25 07:15	0:15	05/25 07:00	9.0
2025/05/25 10:15 - 05/25 12:30	2:15	05/25 12:15	10.7
2025/05/25 16:00 - 05/25 18:30	2:30	05/25 16:30	12.2
2025/05/26 18:45 - 05/26 23:15	4:30	05/26 19:45	15.2
2025/05/27 00:45 - 05/27 01:00	0:15	05/27 00:45	9.1
2025/05/27 01:45 - 05/27 02:30	0:45	05/27 02:00	12.6
2025/05/27 03:15 - 05/27 04:00	0:45	05/27 04:00	11.3
2025/05/27 07:30 - 05/27 09:45	2:15	05/27 08:45	16.0
2025/05/27 10:30 - 05/27 13:00	2:30	05/27 11:30	12.9
2025/05/27 13:45 - 05/27 14:30	0:45	05/27 14:15	9.6
2025/05/27 18:00 - 05/27 18:30	0:30	05/27 18:30	9.0
2025/05/27 20:00 - 05/27 21:15	1:15	05/27 20:00	11.3
2025/05/28 03:15 - 05/28 03:30	0:15	05/28 03:15	9.5
2025/05/28 07:00 - 05/28 13:15	6:15	05/28 10:15	27.0
2025/05/28 15:15 - 05/28 16:45	1:30	05/28 15:30	9.1
2025/05/28 20:45 - 05/28 21:45	1:00	05/28 20:45	17.2
2025/05/29 08:00 - 05/29 08:30	0:30	05/29 08:30	9.7
2025/05/29 14:45 - 05/29 18:00	3:15	05/29 16:00	11.7
2025/05/29 19:00 - 05/29 19:45	0:45	05/29 19:45	11.7
2025/05/29 20:30 - 05/29 20:45	0:15	05/29 20:30	15.8
2025/05/29 21:30 - 05/29 21:45	0:15	05/29 21:30	12.8
2025/05/29 23:15 - 05/30 00:15	1:00	05/29 23:45	15.3
2025/05/30 01:00 - 05/30 01:30	0:30	05/30 01:15	11.7
2025/05/30 04:00 - 05/30 04:45	0:45	05/30 04:30	17.1
2025/05/30 06:30 - 05/30 07:45	1:15	05/30 07:15	9.2
2025/05/30 11:00 - 05/30 11:45	0:45	05/30 11:30	16.3
2025/05/30 14:00 - 05/30 14:45	0:45	05/30 14:45	9.9
2025/05/30 21:45 - 05/30 22:00	0:15	05/30 22:00	10.3
2025/05/31 10:45 - 05/31 11:45	1:00	05/31 10:45	8.7
2025/05/31 13:00 - 05/31 20:45	7:45	05/31 17:15	24.1
2025/06/01 08:15 - 06/01 08:30	0:15	06/01 08:30	9.5
2025/06/01 13:30 - 06/01 14:15	0:45	06/01 13:45	10.8
2025/06/02 01:45 - 06/02 02:00	0:15	06/02 02:00	9.3
2025/06/02 04:15 - 06/02 04:30	0:15	06/02 04:30	9.4
2025/06/02 07:15 - 06/02 08:00	0:45	06/02 08:00	10.5
2025/06/02 09:15 - 06/02 10:30	1:15	06/02 10:00	12.9
2025/06/03 01:30 - 06/03 02:00	0:30	06/03 01:45	9.5
2025/06/05 10:15 - 06/05 10:30	0:15	06/05 10:30	10.4
2025/06/05 11:15 - 06/05 12:45	1:30	06/05 12:15	13.5
2025/06/06 00:45 - 06/06 01:15	0:30	06/06 01:00	10.5
2025/06/06 09:45 - 06/06 10:00	0:15	06/06 10:00	9.6
2025/06/06 18:45 - 06/06 21:30	2:45	06/06 19:30	13.3
2025/06/06 22:30 - 06/07 01:00	2:30	06/07 00:00	13.3
2025/06/08 08:30 - 06/08 09:30	1:00	06/08 09:30	11.0
2025/06/08 14:45 - 06/08 15:45	1:00	06/08 15:30	16.4
2025/06/08 18:15 - 06/08 19:00	0:45	06/08 18:30	11.7
2025/06/08 21:00 - 06/08 22:15	1:15	06/08 21:00	14.3
2025/06/09 14:45 - 06/09 15:45	1:00	06/09 15:15	16.9
2025/06/09 18:30 - 06/09 19:15	0:45	06/09 18:30	17.6
2025/06/10 19:30 - 06/10 20:45	1:15	06/10 19:30	18.4
2025/06/10 21:30 - 06/10 23:45	2:15	06/10 21:45	11.4
2025/06/11 10:30 - 06/11 12:00	1:30	06/11 12:00	9.7
2025/06/11 19:30 - 06/12 00:00	4:30	06/11 19:30	16.9
2025/06/12 08:30 - 06/12 11:15	2:45	06/12 10:00	14.5
2025/06/12 23:15 - 06/13 00:00	0:45	06/12 23:45	11.6
2025/06/13 06:15 - 06/13 12:15	6:00	06/13 11:45	26.8
2025/06/14 08:15 - 06/14 08:45	0:30	06/14 08:15	8.9
2025/06/14 10:15 - 06/14 10:45	0:30	06/14 10:15	8.6
2025/06/15 00:30 - 06/15 00:45	0:15	06/15 00:30	10.2
2025/06/15 08:45 - 06/15 09:45	1:00	06/15 09:45	14.5
2025/06/15 21:00 - 06/15 21:30	0:30	06/15 21:15	16.0
2025/06/15 22:45 - 06/15 23:30	0:45	06/15 22:45	18.5
2025/06/16 16:15 - 06/16 18:15	2:00	06/16 16:30	13.5
2025/06/16 21:15 - 06/16 21:45	0:30	06/16 21:30	17.2
2025/06/16 23:00 - 06/17 01:45	2:45	06/17 00:00	18.1
2025/06/17 07:45 - 06/17 11:15	3:30	06/17 10:45	13.6
2025/06/17 12:45 - 06/17 15:00	2:15	06/17 14:00	17.7
2025/06/17 18:00 - 06/17 20:00	2:00	06/17 18:45	23.2
2025/06/17 21:45 - 06/17 22:15	0:30	06/17 22:15	9.1
2025/06/18 07:15 - 06/18 08:00	0:45	06/18 08:00	10.6
2025/06/18 11:00 - 06/18 14:30	3:30	06/18 12:30	21.3
2025/06/18 19:00 - 06/18 21:30	2:30	06/18 19:45	17.3
2025/06/18 22:30 - 06/18 23:15	0:45	06/18 22:30	9.3
2025/06/19 08:45 - 06/19 13:45	5:00	06/19 10:30	17.2
2025/06/19 14:30 - 06/19 15:00	0:30	06/19 14:30	9.3
2025/06/19 15:45 - 06/19 17:15	1:30	06/19 16:00	11.1
2025/06/19 22:00 - 06/19 23:00	1:00	06/19 22:30	11.1
2025/06/20 10:30 - 06/20 11:15	0:45	06/20 11:00	10.0
2025/06/20 13:00 - 06/20 15:15	2:15	06/20 15:00	12.7
2025/06/20 17:00 - 06/20 17:15	0:15	06/20 17:00	11.2
2025/06/20 19:00 - 06/20 19:30	0:30	06/20 19:15	9.1
2025/06/21 09:45 - 06/21 10:45	1:00	06/21 09:45	14.6
2025/06/22 07:30 - 06/22 08:45	1:15	06/22 07:45	23.1
2025/06/22 09:30 - 06/22 13:00	3:30	06/22 12:30	11.5
2025/06/22 14:15 - 06/22 20:00	5:45	06/22 15:00	23.3
2025/06/23 09:30 - 06/23 10:30	1:00	06/23 10:00	9.7

==================================== 山川(鹿児島) ====================================

電離層嵐継続期間	継続時間	中央値との最大差を観測した日時	中央値との最大差[MHz]	foF2[MHz]
2025/05/18 09:30 - 05/18 18:30	9:00	05/18 13:30	-4.2	5.8
2025/05/19 13:00 - 05/19 16:00	3:00	05/19 15:45	-4.5	5.2
2025/05/21 08:30 - 05/21 09:15	0:45	05/21 09:00	+13.7	21.1
2025/05/30 11:45 - 05/30 19:00	7:15	05/30 19:00	-4.3	4.8
2025/06/01 09:30 - 06/01 09:45	0:15	06/01 09:45	+10.4	18.1
2025/06/02 12:30 - 06/02 19:00	6:30	06/02 13:15	-4.6	4.9
2025/06/03 10:45 - 06/04 01:45	15:00	06/03 13:30	-5.9	4.1
2025/06/13 09:45 - 06/13 10:45	1:00	06/13 10:45	+12.2	20.5
2025/06/14 18:00 - 06/15 01:45	7:45	06/14 19:45	-4.2	4.9
2025/06/18 08:45 - 06/18 09:45	1:00	06/18 09:30	+9.0	16.7

＃突発性電離層擾乱／冬季異常イベントは存在しません

スポラディックＥ継続期間	継続時間	Ｅｓ層臨界周波数の最大値を観測した日時	fxEs[MHz]
2025/05/15 08:30 - 05/15 10:45	2:15	05/15 10:15	13.5
2025/05/15 13:00 - 05/15 14:30	1:30	05/15 13:45	20.8
2025/05/15 20:30 - 05/15 20:45	0:15	05/15 20:45	11.0
2025/05/16 12:15 - 05/16 14:00	1:45	05/16 12:45	9.0
2025/05/16 15:15 - 05/16 16:45	1:30	05/16 16:30	13.5
2025/05/16 18:15 - 05/16 19:30	1:15	05/16 19:15	9.5
2025/05/17 05:00 - 05/17 06:00	1:00	05/17 06:00	12.8
2025/05/17 07:30 - 05/17 12:00	4:30	05/17 10:45	13.4
2025/05/18 06:45 - 05/18 11:15	4:30	05/18 10:45	12.9
2025/05/18 15:15 - 05/18 20:45	5:30	05/18 18:15	20.3
2025/05/18 21:45 - 05/19 00:30	2:45	05/18 23:30	11.3
2025/05/19 08:30 - 05/19 11:00	2:30	05/19 10:00	16.0
2025/05/19 14:15 - 05/19 18:45	4:30	05/19 18:15	12.7
2025/05/20 19:45 - 05/20 21:00	1:15	05/20 20:30	15.1
2025/05/21 08:00 - 05/21 11:00	3:00	05/21 09:45	28.8
2025/05/22 07:15 - 05/22 08:30	1:15	05/22 08:30	12.6
2025/05/22 09:15 - 05/22 10:15	1:00	05/22 09:30	15.1
2025/05/22 11:15 - 05/22 14:00	2:45	05/22 12:45	15.2
2025/05/24 00:15 - 05/24 00:30	0:15	05/24 00:15	11.5
2025/05/24 09:00 - 05/24 10:00	1:00	05/24 09:30	9.4
2025/05/24 10:45 - 05/24 12:45	2:00	05/24 11:30	14.5
2025/05/24 18:00 - 05/24 19:45	1:45	05/24 19:30	12.4
2025/05/24 21:00 - 05/24 21:30	0:30	05/24 21:30	13.4
2025/05/25 01:00 - 05/25 05:00	4:00	05/25 03:45	17.1
2025/05/25 12:00 - 05/25 13:15	1:15	05/25 13:00	9.6
2025/05/25 17:15 - 05/25 19:45	2:30	05/25 19:15	14.8
2025/05/26 10:30 - 05/26 10:45	0:15	05/26 10:30	9.7
2025/05/26 15:00 - 05/26 16:45	1:45	05/26 15:15	12.2
2025/05/26 18:15 - 05/27 01:45	7:30	05/26 22:45	24.9
2025/05/27 17:30 - 05/27 18:00	0:30	05/27 18:00	9.2
2025/05/28 01:15 - 05/28 01:30	0:15	05/28 01:15	15.1
2025/05/28 02:15 - 05/28 04:45	2:30	05/28 02:45	12.4
2025/05/28 05:45 - 05/28 06:30	0:45	05/28 05:45	9.7
2025/05/28 07:30 - 05/28 08:15	0:45	05/28 07:30	11.4
2025/05/28 18:30 - 05/28 22:15	3:45	05/28 22:00	19.9
2025/05/28 23:00 - 05/28 23:30	0:30	05/28 23:00	10.8
2025/05/29 08:15 - 05/29 09:00	0:45	05/29 09:00	11.6
2025/05/29 18:15 - 05/29 20:00	1:45	05/29 19:00	30.0
2025/05/30 07:30 - 05/30 08:00	0:30	05/30 08:00	9.0
2025/05/30 10:15 - 05/30 12:30	2:15	05/30 12:15	24.2
2025/05/30 13:15 - 05/30 15:00	1:45	05/30 14:00	12.7
2025/05/30 15:45 - 05/30 17:00	1:15	05/30 16:30	12.0
2025/05/30 18:30 - 05/30 19:15	0:45	05/30 19:00	12.5
2025/05/30 22:00 - 05/30 22:45	0:45	05/30 22:15	10.5
2025/05/30 23:30 - 05/30 23:45	0:15	05/30 23:30	9.0
2025/05/31 03:45 - 05/31 04:00	0:15	05/31 04:00	8.3
2025/05/31 11:15 - 05/31 12:30	1:15	05/31 12:00	16.8
2025/05/31 18:00 - 05/31 19:00	1:00	05/31 18:45	9.5
2025/05/31 20:30 - 05/31 21:15	0:45	05/31 21:00	10.9
2025/06/01 07:45 - 06/01 09:15	1:30	06/01 08:30	11.0
2025/06/01 10:15 - 06/01 15:15	5:00	06/01 13:30	20.1
2025/06/01 23:30 - 06/02 00:30	1:00	06/02 00:15	12.6
2025/06/02 01:30 - 06/02 03:30	2:00	06/02 02:00	13.9
2025/06/02 04:15 - 06/02 07:00	2:45	06/02 06:45	20.3
2025/06/02 09:30 - 06/02 10:15	0:45	06/02 10:15	11.7
2025/06/02 11:15 - 06/02 11:45	0:30	06/02 11:15	8.8
2025/06/03 09:00 - 06/03 10:15	1:15	06/03 09:30	15.3
2025/06/04 07:15 - 06/04 08:15	1:00	06/04 08:00	9.4
2025/06/05 07:30 - 06/05 13:30	6:00	06/05 12:00	15.1
2025/06/06 12:45 - 06/06 14:15	1:30	06/06 13:30	10.1
2025/06/06 21:00 - 06/06 22:15	1:15	06/06 21:00	17.4
2025/06/07 00:15 - 06/07 01:00	0:45	06/07 00:30	14.3
2025/06/07 09:15 - 06/07 09:30	0:15	06/07 09:30	8.1
2025/06/07 20:15 - 06/07 20:45	0:30	06/07 20:45	8.2
2025/06/08 13:00 - 06/08 15:30	2:30	06/08 13:15	21.4
2025/06/08 19:15 - 06/08 21:00	1:45	06/08 19:15	10.5
2025/06/08 22:45 - 06/09 00:00	1:15	06/08 23:15	14.7
2025/06/09 03:15 - 06/09 03:45	0:30	06/09 03:30	12.9
2025/06/09 09:00 - 06/09 10:30	1:30	06/09 10:15	12.8
2025/06/09 16:00 - 06/09 17:15	1:15	06/09 17:00	9.2
2025/06/10 11:00 - 06/10 12:15	1:15	06/10 11:15	10.6
2025/06/10 14:15 - 06/10 14:30	0:15	06/10 14:15	8.5
2025/06/10 21:45 - 06/10 22:15	0:30	06/10 22:00	11.6
2025/06/11 03:15 - 06/11 03:30	0:15	06/11 03:30	12.9
2025/06/11 07:30 - 06/11 08:15	0:45	06/11 07:30	9.3
2025/06/11 09:00 - 06/11 09:30	0:30	06/11 09:00	10.6
2025/06/11 17:00 - 06/11 18:45	1:45	06/11 17:45	12.6
2025/06/11 22:15 - 06/11 22:45	0:30	06/11 22:15	11.1
2025/06/12 00:30 - 06/12 01:00	0:30	06/12 01:00	10.9
2025/06/12 07:00 - 06/12 12:00	5:00	06/12 11:15	17.2
2025/06/13 07:45 - 06/13 12:00	4:15	06/13 09:30	21.7
2025/06/13 13:30 - 06/13 14:30	1:00	06/13 14:15	18.5
2025/06/14 13:00 - 06/14 14:15	1:15	06/14 13:15	12.3
2025/06/14 17:15 - 06/14 17:45	0:30	06/14 17:45	9.7
2025/06/15 11:30 - 06/15 13:30	2:00	06/15 11:45	18.4
2025/06/15 18:15 - 06/15 18:30	0:15	06/15 18:15	9.4
2025/06/15 20:15 - 06/15 20:30	0:15	06/15 20:30	8.8
2025/06/15 22:30 - 06/15 23:15	0:45	06/15 23:15	13.6
2025/06/16 00:45 - 06/16 02:15	1:30	06/16 00:45	15.1
2025/06/16 08:00 - 06/16 08:15	0:15	06/16 08:00	8.6
2025/06/16 09:00 - 06/16 12:30	3:30	06/16 11:15	22.1
2025/06/16 17:00 - 06/16 17:30	0:30	06/16 17:30	8.9
2025/06/16 18:30 - 06/16 19:30	1:00	06/16 18:45	14.4
2025/06/16 20:45 - 06/16 21:30	0:45	06/16 21:30	9.4
2025/06/17 09:00 - 06/17 13:45	4:45	06/17 13:00	30.0
2025/06/18 06:00 - 06/18 06:15	0:15	06/18 06:15	20.2
2025/06/18 07:00 - 06/18 15:45	8:45	06/18 09:30	18.1
2025/06/18 20:00 - 06/18 20:45	0:45	06/18 20:15	19.4
2025/06/18 23:45 - 06/19 00:30	0:45	06/18 23:45	10.2
2025/06/19 09:45 - 06/19 14:15	4:30	06/19 13:00	19.6
2025/06/19 15:30 - 06/19 17:30	2:00	06/19 16:30	14.5
2025/06/19 19:30 - 06/19 19:45	0:15	06/19 19:45	9.2
2025/06/21 00:15 - 06/21 00:45	0:30	06/21 00:45	9.1
2025/06/21 02:30 - 06/21 02:45	0:15	06/21 02:45	11.6
2025/06/21 10:00 - 06/21 10:45	0:45	06/21 10:15	10.9
2025/06/21 13:00 - 06/21 13:30	0:30	06/21 13:00	10.7
2025/06/22 01:45 - 06/22 02:30	0:45	06/22 02:15	10.3
2025/06/22 06:15 - 06/22 13:15	7:00	06/22 10:30	23.9
2025/06/22 18:15 - 06/22 19:00	0:45	06/22 18:30	10.4
2025/06/23 10:45 - 06/23 11:15	0:30	06/23 11:00	10.3

==================================== 大宜味(沖縄) ====================================

電離層嵐継続期間	継続時間	中央値との最大差を観測した日時	中央値との最大差[MHz]	foF2[MHz]
2025/05/16 11:45 - 05/17 02:30	14:45	05/16 18:00	+4.7	15.1
2025/05/17 07:45 - 05/17 10:00	2:15	05/17 08:45	+13.7	21.1
2025/05/18 10:00 - 05/18 20:00	10:00	05/18 14:45	-3.9	6.7
2025/05/20 21:30 - 05/20 22:15	0:45	05/20 22:15	+7.3	15.2
2025/05/25 13:45 - 05/25 14:00	0:15	05/25 14:00	-5.5	4.5
2025/05/25 16:00 - 05/25 17:00	1:00	05/25 16:30	+10.6	21.3
2025/05/31 08:15 - 05/31 09:00	0:45	05/31 08:45	+8.9	16.3
2025/06/01 10:45 - 06/01 11:00	0:15	06/01 11:00	+12.8	21.5
2025/06/02 02:00 - 06/02 16:15	14:15	06/02 11:45	-4.0	5.0
2025/06/02 20:45 - 06/03 00:45	4:00	06/03 00:00	+4.7	12.8
2025/06/03 08:45 - 06/04 03:15	18:30	06/03 18:45	-5.3	5.4
2025/06/12 14:15 - 06/12 19:15	5:00	06/12 16:15	+12.6	23.3
2025/06/13 02:30 - 06/13 05:00	2:30	06/13 03:45	+4.4	11.6
2025/06/14 18:00 - 06/15 05:30	11:30	06/14 19:30	-5.6	4.6
2025/06/18 13:00 - 06/18 20:15	7:15	06/18 17:30	-4.0	6.6
2025/06/19 10:00 - 06/19 21:00	11:00	06/19 19:00	-4.0	6.7

＃突発性電離層擾乱／冬季異常イベントは存在しません

スポラディックＥ継続期間	継続時間	Ｅｓ層臨界周波数の最大値を観測した日時	fxEs[MHz]
2025/05/15 07:15 - 05/15 08:45	1:30	05/15 07:15	30.0
2025/05/15 10:15 - 05/15 12:15	2:00	05/15 10:45	21.4
2025/05/15 19:00 - 05/15 20:00	1:00	05/15 20:00	13.5
2025/05/15 21:00 - 05/15 22:15	1:15	05/15 21:00	13.8
2025/05/16 03:30 - 05/16 03:45	0:15	05/16 03:30	14.2
2025/05/16 07:30 - 05/16 09:15	1:45	05/16 09:00	11.5
2025/05/16 19:45 - 05/16 20:45	1:00	05/16 20:30	14.7
2025/05/16 22:00 - 05/16 22:30	0:30	05/16 22:30	11.6
2025/05/16 23:30 - 05/17 00:00	0:30	05/16 23:30	11.3
2025/05/17 07:30 - 05/17 13:30	6:00	05/17 08:15	27.7
2025/05/17 20:30 - 05/17 21:00	0:30	05/17 20:30	9.9
2025/05/17 22:15 - 05/17 22:45	0:30	05/17 22:15	9.2
2025/05/17 23:30 - 05/18 00:30	1:00	05/17 23:45	10.5
2025/05/18 03:15 - 05/18 03:30	0:15	05/18 03:30	8.8
2025/05/18 08:00 - 05/18 11:30	3:30	05/18 11:00	22.5
2025/05/18 12:30 - 05/18 13:00	0:30	05/18 12:45	9.6
2025/05/18 18:45 - 05/18 19:00	0:15	05/18 19:00	11.1
2025/05/19 00:30 - 05/19 03:00	2:30	05/19 01:45	17.6
2025/05/19 08:00 - 05/19 12:30	4:30	05/19 11:15	16.5
2025/05/20 08:30 - 05/20 09:30	1:00	05/20 08:45	11.7
2025/05/20 21:15 - 05/20 22:00	0:45	05/20 21:30	15.5
2025/05/20 22:45 - 05/20 23:45	1:00	05/20 23:15	11.5
2025/05/21 08:00 - 05/21 10:15	2:15	05/21 08:45	26.4
2025/05/22 08:00 - 05/22 08:15	0:15	05/22 08:00	10.4
2025/05/22 10:00 - 05/22 14:00	4:00	05/22 10:30	22.2
2025/05/22 15:45 - 05/22 16:00	0:15	05/22 16:00	9.2
2025/05/23 00:45 - 05/23 01:45	1:00	05/23 00:45	30.0
2025/05/23 07:30 - 05/23 07:45	0:15	05/23 07:45	9.2
2025/05/23 10:45 - 05/23 11:00	0:15	05/23 11:00	8.7
2025/05/23 20:15 - 05/23 21:00	0:45	05/23 20:30	9.4
2025/05/23 23:45 - 05/24 02:30	2:45	05/24 01:15	17.4
2025/05/24 18:00 - 05/24 19:00	1:00	05/24 18:45	14.7
2025/05/24 20:00 - 05/24 23:30	3:30	05/24 21:15	23.5
2025/05/25 09:30 - 05/25 10:15	0:45	05/25 10:15	9.5
2025/05/25 13:15 - 05/25 21:30	8:15	05/25 16:45	30.0
2025/05/26 07:00 - 05/26 15:00	8:00	05/26 09:15	20.4
2025/05/26 18:15 - 05/26 18:30	0:15	05/26 18:30	9.4
2025/05/28 07:15 - 05/28 10:45	3:30	05/28 07:45	26.4
2025/05/28 22:00 - 05/28 22:45	0:45	05/28 22:15	15.3
2025/05/29 07:30 - 05/29 11:45	4:15	05/29 11:15	14.9
2025/05/29 14:45 - 05/29 16:45	2:00	05/29 16:30	20.1
2025/05/29 18:45 - 05/29 19:30	0:45	05/29 19:00	22.8
2025/05/30 11:30 - 05/30 12:45	1:15	05/30 12:15	16.6
2025/05/30 16:45 - 05/30 17:30	0:45	05/30 17:15	19.7
2025/05/30 22:45 - 05/30 23:00	0:15	05/30 22:45	10.7
2025/05/31 02:45 - 05/31 04:00	1:15	05/31 02:45	16.9
2025/05/31 07:15 - 05/31 09:45	2:30	05/31 09:30	17.1
2025/05/31 12:30 - 05/31 15:30	3:00	05/31 13:45	29.0
2025/05/31 16:30 - 05/31 19:00	2:30	05/31 18:45	13.0
2025/05/31 22:45 - 06/01 00:15	1:30	05/31 23:15	10.5
2025/06/01 01:15 - 06/01 01:30	0:15	06/01 01:30	10.7
2025/06/01 08:15 - 06/01 14:00	5:45	06/01 11:00	26.9
2025/06/02 01:00 - 06/02 02:15	1:15	06/02 02:00	11.1
2025/06/02 03:45 - 06/02 06:15	2:30	06/02 04:15	11.9
2025/06/02 13:00 - 06/02 14:00	1:00	06/02 13:15	22.5
2025/06/03 04:15 - 06/03 05:15	1:00	06/03 04:30	11.5
2025/06/04 07:45 - 06/04 08:45	1:00	06/04 08:00	14.9
2025/06/04 09:30 - 06/04 12:15	2:45	06/04 11:30	18.2
2025/06/05 10:00 - 06/05 12:30	2:30	06/05 10:45	16.1
2025/06/06 08:15 - 06/06 09:15	1:00	06/06 08:15	13.8
2025/06/06 22:45 - 06/07 00:15	1:30	06/07 00:15	22.1
2025/06/07 01:00 - 06/07 03:30	2:30	06/07 01:15	21.8
2025/06/07 08:00 - 06/07 08:45	0:45	06/07 08:30	12.7
2025/06/08 10:15 - 06/08 11:00	0:45	06/08 10:15	13.7
2025/06/08 12:00 - 06/08 12:45	0:45	06/08 12:15	11.7
2025/06/08 20:15 - 06/08 20:30	0:15	06/08 20:30	9.0
2025/06/09 00:30 - 06/09 01:45	1:15	06/09 01:00	15.9
2025/06/09 06:15 - 06/09 06:45	0:30	06/09 06:15	19.5
2025/06/09 07:45 - 06/09 13:15	5:30	06/09 11:15	26.7
2025/06/09 14:15 - 06/09 14:45	0:30	06/09 14:15	11.1
2025/06/09 16:30 - 06/09 18:00	1:30	06/09 17:45	13.8
2025/06/10 00:00 - 06/10 00:15	0:15	06/10 00:00	8.5
2025/06/10 13:15 - 06/10 13:45	0:30	06/10 13:15	9.3
2025/06/11 00:15 - 06/11 02:00	1:45	06/11 00:45	9.7
2025/06/11 07:30 - 06/11 14:00	6:30	06/11 09:00	28.5
2025/06/11 16:30 - 06/11 23:00	6:30	06/11 22:15	12.6
2025/06/12 01:15 - 06/12 05:00	3:45	06/12 02:45	28.5
2025/06/12 11:45 - 06/12 12:00	0:15	06/12 12:00	8.3
2025/06/12 13:00 - 06/12 13:15	0:15	06/12 13:00	9.7
2025/06/13 07:15 - 06/13 08:30	1:15	06/13 07:45	14.2
2025/06/13 09:45 - 06/13 13:15	3:30	06/13 10:45	30.0
2025/06/13 17:15 - 06/13 17:45	0:30	06/13 17:45	9.0
2025/06/14 21:15 - 06/14 21:30	0:15	06/14 21:30	9.4
2025/06/15 10:15 - 06/15 11:15	1:00	06/15 11:00	10.9
2025/06/15 17:45 - 06/15 18:45	1:00	06/15 18:15	11.5
2025/06/15 21:30 - 06/15 22:45	1:15	06/15 22:00	20.8
2025/06/16 00:45 - 06/16 03:00	2:15	06/16 02:30	12.7
2025/06/16 08:30 - 06/16 08:45	0:15	06/16 08:30	8.9
2025/06/16 18:15 - 06/16 18:45	0:30	06/16 18:15	11.7
2025/06/16 19:30 - 06/16 20:30	1:00	06/16 20:00	26.1
2025/06/17 08:15 - 06/17 12:15	4:00	06/17 11:30	26.5
2025/06/18 09:45 - 06/18 10:00	0:15	06/18 09:45	10.7
2025/06/18 20:30 - 06/18 21:45	1:15	06/18 21:30	12.5
2025/06/18 22:45 - 06/18 23:30	0:45	06/18 23:15	11.5
2025/06/19 08:00 - 06/19 08:45	0:45	06/19 08:30	12.0
2025/06/19 13:15 - 06/19 15:15	2:00	06/19 13:15	14.7
2025/06/19 17:00 - 06/19 17:45	0:45	06/19 17:30	9.5
2025/06/20 00:30 - 06/20 01:30	1:00	06/20 00:30	16.1
2025/06/21 02:00 - 06/21 02:15	0:15	06/21 02:00	11.5
2025/06/21 04:00 - 06/21 04:15	0:15	06/21 04:15	12.4
2025/06/21 08:45 - 06/21 09:45	1:00	06/21 09:45	22.8
2025/06/21 10:30 - 06/21 12:30	2:00	06/21 11:00	11.1
2025/06/21 13:45 - 06/21 14:00	0:15	06/21 13:45	11.7
2025/06/21 15:00 - 06/21 15:30	0:30	06/21 15:00	9.7
2025/06/22 09:45 - 06/22 10:30	0:45	06/22 10:15	13.3
2025/06/22 11:15 - 06/22 11:45	0:30	06/22 11:30	12.8
2025/06/23 05:00 - 06/23 05:30	0:30	06/23 05:00	29.5
2025/06/23 09:30 - 06/23 10:45	1:15	06/23 10:45	22.9
2025/06/23 11:30 - 06/23 12:15	0:45	06/23 12:00	11.6