Fig. 2
From: Discovery of under immunized spatial clusters using network scan statistics
Top two significant clusters in MN (top right and top left) are shown. Each dot on the map is a block group. The same clusters are shown as block group polygons on the bottom right and left, with each marker corresponding to a block group. First cluster in Minnesota covers the city of St. Paul (top left and bottom left) and the second cluster covers the rural block groups west of Minneapolis (top right and bottom right)