UTFGrid

UTFGrid parameters:
Center:     {"x": 121.6 ,"y": 31.19 }
Scale:     0.000005621777
View bounds:

•     Left bottom: {"x": 121.54 , "y":31.14 }
•     Right top : { "x": 121.65 , "y":31.25}

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