UTFGrid

UTFGrid parameters:
Center:     {"x": 121.63 ,"y": 31.26 }
Scale:     0.000007751294
View bounds:

•     Left bottom: {"x": 121.59 , "y":31.22 }
•     Right top : { "x": 121.67 , "y":31.3}

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