Table 2.

Linear regression analysis of Reactive P and Nitrate-N concentrations in rivers to NAOi.

Catchment	Reactive P = bo + b1*NAOi								Nitrate-N = bo + b1*NAOi
	SMA	n	b0	b1	R2	t	p	u	SMA	n	b0	b1	R2	t	p	u
	[yr]	[yr]							[yr]	[yr]
Ireland:
Corduff	4	6	0.028	−0.007	0.88	74.38	0.005	0.001	4	6*	1.163	0.146	0.03	10.37	0.737	0.223
Dunleer	4	7*	0.106	−0.024	0.18	16.68	0.341	0.013	4	7	4.991	−0.016	0.00	14.43	0.990	0.696
Cregduff	5	5	0.032	0.053	0.79	6.65	0.043	0.001	5	7*	1.356	−0.012	0.00	4.98	0.991	0.464
Ballycanew	0	6**	0.068	0.011	0.95	124.57	<0.001	0.001	0	7	2.533	0.395	0.28	20.13	0.222	0.321
Castledockerell	0	7*	0.028	−0.001	0.01	16.48	0.799	0.004	0	7*	7.017	0.965	0.87	95.68	0.002	0.187
Timoleague	4	7	0.074	0.066	0.82	19.04	0.005	0.008	0	7	5.838	0.965	0.57	32.20	0.049	0.423
Norway:
Mørdre	3	6**	0.060	0.058	0.99	73.54	<0.001	0.002	3	7	3.045	0.071	0.00	9.80	0.945	0.699
Skuterud	4	7	0.050	−0.053	0.64	9.96	0.031	0.010	4	7	3.780	0.613	0.23	26.41	0.279	0.288
Skas-Heigre	4	6*	0.032	−0.050	0.83	9.18	0.012	0.006	0	6*	3.119	−0.636	0.45	18.56	0.146	0.385
Time	0	7*	0.080	0.004	0.02	15.71	0.742	0.013	4	7	5.000	1.915	0.76	36.43	0.011	0.276
Vasshaglona	4	7	0.070	0.026	0.20	10.90	0.308	0.013	0	7*	4.275	0.497	0.17	19.76	0.354	0.552
France:
Kervidy-Naizin	5	7*	0.055	0.124	0.74	6.32	0.014	0.015	3	7	13.193	−6.892	0.91	42.84	<0.001	0.693
Moulinet	0	6	0.024	0.016	0.49	6.00	0.122	0.009	n/a	n/a	n/a	n/a	n/a	n/a	n/a	n/a

*Analysis includes an outlier year as defined by Cook’s D test > 1. **Analysis excludes an outlier year as defined by Cook’s D test > 1.

Antecedent simple moving averages (SMA) used for best correlation, number of analysed years (N), intercept (b₀), slope (b₁), t value (t), correlation coefficient (R²), probability (p) and uncertainty of the regression (u).