Environmental half-lives of outdoor radioactive molecules at each evacuation site.

<p>Environmental half-lives (HFs) at cities of evacuation sites G1–G3 (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0101650#pone-0101650-g001" target="_blank">Figure 1</a>) were calculated using the least squares method with the obtained data;</p>a<p><i>p</i><0.01 vs. early stage (15–31 March) of HFs at G2 and G3;</p>b<p><i>p</i><0.05 vs. early stage of HFs at G3;</p>c<p><i>p</i><0.05 vs. delay stage (April–July) of HFs at G3, and <i>^dp</i><0.05 vs. delay stage of HFs at G3; by Tukey–Kramer's test.