{"entity":{"iso2":"TO","iso3":"TON","name":"Tonga","slug":"tonga"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"significant-earthquakes","source":"National Geophysical Data Center / World Data Service (2025) \u2013 with major processing by Our World in Data","source_url":"https://ourworldindata.org/grapher/significant-earthquakes","title":"Number of significant earthquakes","unit":"events"},"observations":[{"date":"1853-01-01","value":1.0},{"date":"1865-01-01","value":1.0},{"date":"1881-01-01","value":1.0},{"date":"1902-01-01","value":1.0},{"date":"1903-01-01","value":1.0},{"date":"1907-01-01","value":1.0},{"date":"1913-01-01","value":1.0},{"date":"1919-01-01","value":1.0},{"date":"1928-01-01","value":1.0},{"date":"1948-01-01","value":1.0},{"date":"1949-01-01","value":1.0},{"date":"1950-01-01","value":1.0},{"date":"1956-01-01","value":1.0},{"date":"1963-01-01","value":1.0},{"date":"1975-01-01","value":1.0},{"date":"1977-01-01","value":2.0},{"date":"1982-01-01","value":1.0},{"date":"1987-01-01","value":1.0},{"date":"1997-01-01","value":1.0},{"date":"2006-01-01","value":1.0},{"date":"2009-01-01","value":1.0},{"date":"2022-01-01","value":1.0},{"date":"2023-01-01","value":1.0}],"summary":{"latest_period":"2023-01-01","latest_value":1.0,"max":2.0,"mean":1.04348,"min":1.0,"of":97,"rank":21,"trend":"rising"}}