Figure 1From: Geographic boundaries in breast, lung and colorectal cancers in relation to exposure to air toxics in Long Island, New YorkColorectal cancer in females. The fill in the ZIP code areas indicates the SMR for female colorectal 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 yellow indicate those ZIP code edges with large changes in cancer incidence. The blue outlines are the ZIP code edges.Back to article page