{"asset":{"generatetool":"mars3d@mars3d.cn/osgb2tiles3","gltfUpAxis":"Z","version":"1.0"},"root":{"boundingVolume":{"box":[49.7247428894043,-49.7080774307251,431.465560913086,30.3153190612793,0,0,0,30.5237035751343,0,0,0,10.8430328369141]},"content":{"uri":"Tile_+004_+003_L17_00.b3dm"},"geometricError":0,"pixel":88,"radius":44.1631507873535}}