UTFGrid

UTFGrid parameters:
Center:     {"x": 121.54 ,"y": 31.33 }
Scale:     0.00000741005
View bounds:

•     Left bottom: {"x": 121.5 , "y":31.29 }
•     Right top : { "x": 121.58 , "y":31.37}

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