{"asset":{"generatetool":"mars3d@mars3d.cn/osgb2tiles3","gltfUpAxis":"Z","version":"1.0"},"root":{"boundingVolume":{"box":[50.1079740524292,-100.446746826172,428.661727905273,30.1786699295044,0,0,0,29.7357940673828,0,0,0,9.23265075683594]},"content":{"uri":"Tile_+004_+002_L17_00.b3dm"},"geometricError":0,"pixel":86,"radius":43.469596862793}}