UTFGrid

UTFGrid parameters:
Center:     {"x": 121.28 ,"y": 46.8 }
Scale:     0.000000557631
View bounds:

•     Left bottom: {"x": 120.73 , "y":46.26 }
•     Right top : { "x": 121.82 , "y":47.35}

•   Width: 256
•   Height: 256
•   PixcelCellCount: 8