UTFGrid

UTFGrid parameters:
Center:     {"x": 121.81 ,"y": 30.97 }
Scale:     0.000010200359
View bounds:

•     Left bottom: {"x": 121.78 , "y":30.94 }
•     Right top : { "x": 121.84 , "y":31.0}

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