“Ionospheric Data in Japan” is a monthly data book which contains summary plots and characteristics of ionosphere by using four domestic (Wakkanai, Kokubunji, Yamagawa, Okinawa) ionospheric observations, and contains summary plots and event lists from solar radio observation at Hiraiso.


※Please note that the service might be temporarily unavailable due to due to network congestion

Latest Data in Japan

Month/Year Title
June 2016 June 2016 Vol.68 No.6
May 2016 May 2016 Vol.68 No.5
April 2016 April 2016 Vol.68 No.4
March 2016 March 2016 Vol.68 No.3
February 2016 February 2016 Vol.68 No.2
January 2016 January 2016 Vol.68 No.1

Data Archives