UTFGrid

UTFGrid parameters:
Center:     {"x": 121.97 ,"y": 45.91 }
Scale:     0.00000031823
View bounds:

•     Left bottom: {"x": 121.01 , "y":44.95 }
•     Right top : { "x": 122.92 , "y":46.87}

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