If you click a part of the spectrograms below, maps of GPS-TEC ROTI during the corresponding 1 hour period will appear (every 5 min).
A movie of the ROTI data is also available.  6-days Prediction of Toropospheric Duct
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Sarobetsu, Hokkaido:  Status,  Zoom-in             | Sugadaira, Nagano:  Status,  Zoom-in             | Oarai, Ibaraki:  Status,  Zoom-in             |
Chofu, Tokyo:  Status,  Zoom-in
 | Kure, Hiroshima:  Status,  Zoom-in
 | Onna-North, Okinawa:  Status,  Zoom-in
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Sendai, Miyagi:  Status,  Zoom-in
 | Kyoto, Kyoto:  Status,  Zoom-in
 | Kirishima, Kagoshima:  Status,  Zoom-in
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