UTFGrid

UTFGrid parameters:
Center:     {"x": 121.64 ,"y": 31.31 }
Scale:     0.000005756763
View bounds:

•     Left bottom: {"x": 121.59 , "y":31.26 }
•     Right top : { "x": 121.69 , "y":31.37}

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