This catalog comprises shallow tectonic tremors in Hyuga-nada detected using N-net from July 2024 to September 2025.
The data format is as follows: Year, Month, Day, Hour, Min, longitude [deg], latitude [deg], depth [km], error in longitude [km], error in latitude [km], error in depth [km], number of stations, and category, respectively. Time zone is Japan Standard Time (JST, UTC + 9 hr).