UTFGrid

UTFGrid parameters:
Center:     {"x": 121.67 ,"y": 31.04 }
Scale:     0.000005224279
View bounds:

•     Left bottom: {"x": 121.61 , "y":30.98 }
•     Right top : { "x": 121.73 , "y":31.09}

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