Environmental Sciences Europe

Table 3 Correlation matrix between selected parameters based on Pearson's correlation coefficient r

From: Spring waters as an indicator of nitrate and pesticide pollution of rural watercourses from nonpoint sources: results of repeated monitoring campaigns since the early 2000s in the low mountain landscape of Saarland, Germany

R	NO₃⁻	NH₄+	EC	Δ T	O₂ median	O₂ min	Farmland [%]	Cropland [%]
NO₃⁻	1.00
NH₄⁺	0.00	1.00
EC	0.29	0.14	1.00
Δ T	− 0.18	0.49	− 0.11	1.00
O₂ median	− 0.03	− 0.44	− 0.27	− 0.27	1.00
O₂ min	0.07	− 0.49	− 0.20	− 0.51	0.82	1.00
Farmland	0.80	0.09	0.47	0.00	− 0.07	− 0.09	1.00
Cropland	0.88	0.10	0.36	− 0.07	− 0.04	0.03	0.86	1.00

Bold = p < 0.05

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