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. 2009 Jun 26;4(6):e6064. doi: 10.1371/journal.pone.0006064

Table 1. Average water concentrations (ng L−1) of oseltamivir carboxylate (OC) measured in Kyoto (R1–R4) and Osaka (R5–R6) prefectures, Japan.

Date Week Kamo River Katsura River Yodo River
R1 R2 R3 R4 R5 R6
2007-06-13 nd nd - nd - -
2007-12-17 50 - 2 - 7 - -
2008-02-04 5 2 4 - 11 - -
2008-02-12 6 - 4 19 10
2008-02-15 6 - - - - 12 58