Statistic

Variable

pH

TDS

Nitrates

Phosphates

Copper

Zinc

Mean ± SE

7.270 ± 0.206

467.400 ± 109.060

1.04 ± 0.10

0.410 ± 0.062*

2.870 ± 0.251

2.734 ± 0.331*

0.177 ± 0.008

95% CI

[6.805, 7.735]

[220.690, 714.110]

[0.82, 1.26]

[0.040, 0.260]*

[2.303, 3.437]

[2.126, 3.434]*

[0.159, 0.195]