UTFGrid

UTFGrid parameters:
Center:     {"x": 121.58 ,"y": 31.1 }
Scale:     0.000009291768
View bounds:

•     Left bottom: {"x": 121.54 , "y":31.07 }
•     Right top : { "x": 121.61 , "y":31.13}

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