UTFGrid

UTFGrid parameters:
Center:     {"x": 121.63 ,"y": 45.25 }
Scale:     0.000000347134
View bounds:

•     Left bottom: {"x": 120.75 , "y":44.38 }
•     Right top : { "x": 122.5 , "y":46.13}

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