UTFGrid

UTFGrid parameters:
Center:     {"x": 121.25 ,"y": 45.85 }
Scale:     0.000000517266
View bounds:

•     Left bottom: {"x": 120.66 , "y":45.26 }
•     Right top : { "x": 121.83 , "y":46.43}

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