. 2021 May 14;193(Suppl 1):272. doi: 10.1007/s10661-020-08811-3

Table 7.

Mann-Kendall trend analysis, effects of antecedent hydrologic conditions

Solute species	Maximum days of transport limited dry conditions			Low end flushing flows			High end flushing flows
	∑Q_0.1 (time window)	Tau	Two-sided	Q_j (m³/s)	Tau	Two-sided	Q_j (m³/s)	Tau	Two-sided
	∑Q_0.1 (time window)	Tau	P value^a	Q_j (m³/s)	Tau	P value^a	Q_j (m³/s)	Tau	P value^a
Ca	210	−0.10	*	3	−0.12	*	90	−0.12	*
Mg	2000	−0.12	*	7	−0.10	*	1200	−0.18	**
Na	500	−0.10	*	7	−0.11	*	1200	−0.17	**
K	130	−0.12	*	-	-	-	-	-	-
SO₄	350	−0.13	*	3	−0.11	*	1000	−0.12	*
Cl	700	−0.10	*	2	−0.11	*	1200	−0.19	***
HCO₃	60	−0.15	*	-	-	-	-	-	-
NO₃	240	−0.14	*	7	−0.13	*	1200	−0.14	*

^aTwo-sided p value ranges: ns > 0.5; 0

***0.001, **0.01, *0.05