UTFGrid

UTFGrid parameters:
Center:     {"x": 120.42 ,"y": 28.07 }
Scale:     0.000003461455
View bounds:

•     Left bottom: {"x": 120.33 , "y":27.98 }
•     Right top : { "x": 120.51 , "y":28.16}

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