Table 1
Water physicochemical parameters measured during long-term monitoring on the Rhine River. Bold values are means of water samplings performed at both upstream and downstream sites (n = 41) from March 2011 to July 2013. Minimal and maximal values are in italics. RSD is relative standard deviation, TSS is total suspended matter and DOC is dissolved organic carbon.
| Mean | min─max | RSD (%) | |
|---|---|---|---|
| Temperature (°C) | 12.7 | 1.5─24.8 | 48.7 |
| Discharge (m3 s−1) | 988.3 | 563─1652 | 29.9 |
| pH | 7.9 | 6.6─10.9 | 13.3 |
| TSS (mg L−1) | 9.9 | 2.2─37.2 | 77.4 |
| DOC | 2.0 | 1.3─3.2 | 18.5 |
| Na+ | 12.5 | 7.9─18.7 | 24.5 |
| K+ | 1.8 | 1.2─2.5 | 23.3 |
| Mg2+ | 8.4 | 5.1─10.7 | 17.5 |
| Ca2+ | 64.6 | 45.2─79.6 | 11.9 |
| Cl− | 13.9 | 8.6─20.2 | 28.3 |
| NO32− | 6.8 | 4.5─9.2 | 23.6 |
| SO42− | 24.7 | 21.7─26.3 | 5.8 |
| HCO3− | 167.6 | 154.7─205.3 | 12.4 |
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