Figure 7From: Geographic boundaries in breast, lung and colorectal cancers in relation to exposure to air toxics in Long Island, New YorkFemale breast cancer boundaries. The blue outlines are the ZIP code edges. The fill in the ZIP code areas indicates the SMR for female breast cancer, with darker purple regions having higher SMR, white regions having SMR near 1, and darker green regions having lower SMR. The boundaries shown in orange indicate those ZIP code edges with large changes in cancer incidence.Back to article page