{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"VerticalCRS","name":"COH88 2025 (NAVD88) height","datum":{"type":"VerticalReferenceFrame","name":"Derived California Orthometric Heights of 1988 epoch 2025"},"coordinate_system":{"subtype":"vertical","axis":[{"name":"Gravity-related height","abbreviation":"H","direction":"up","unit":"metre"}]},"scope":"Geodesy, engineering survey, topographic mapping.","area":"United States (USA) - California.","bbox":{"south_latitude":32.53,"west_longitude":-124.45,"north_latitude":42.01,"east_longitude":-114.12},"id":{"authority":"EPSG","code":10918}}