<p>(1) SR – Spring River, Jasper County, Missouri(2). STJ – St. Joseph River, Michigan(3). P30 – USGS Pond 30 Missouri(4). DOW – Dow Creek Michigan(5). RR2 – Raisin River Site 2, Michigan(6). STM – South Tributary of Mill Creek, Michigan(7). RR3-0 Raisin River Site 3, Michigan(8). WB – West Bearskin Lake Minnesota. Sites are given in order presented in Tables 1-3 and based upon <i>C. elegans</i> survivorship performance. The letter A designates the position of Chicago, IL, USA.</p
