Location (s)

Correlations

Nitrate ( ${\text{NO}}_3^{-}$ )

Nitrite ( ${\text{NO}}_2^{-}$ )

Ammonia (NH₃)

Cerro Alto

One week prior

r^a = 0.040, p^b = 0.902

r = −0.325, p = 0.303

r = −0.151, p = 0.640

Two weeks prior

r = −0.002, p = 0.995

r = −0.390, p = 0.210

r = −0.281, p = 0.377

Margara Creek

One week prior

r = −0.132, p = 0.683

r = 0.531, p = 0.076

r = 0.460, p = 0.133

Two weeks prior

r = −0.077, p = 0.813

r = 0.327, p = 0.300

r = 0.415, p = 0.180

Margara Canal

One week prior

r = −0.052, p = 0.872

r = −0.515, p = 0.086

r = 0.848, p = 0.000

Two weeks prior

r = −0.069, p = 0.831

r = −0.628, p = 0.029

r = 0.789, p = 0.002

UPR Agricultural Experimental Substation Drainage Canal

One week prior

r = −0.213, p = 0.506

r = −0.259, p = 0.416

r = −0.135, p = 0.675

Two weeks prior

r = −0.285, p = 0.370

r = −0.251, p = 0.432

r = 0.133, p = 0.681

Principal Drainage Canal (Combined Inlet)

One week prior

r = −0.236, p = 0.460

r = 0.170, p = 0.598

r = 0.233, p = 0.466

Two weeks prior

r = −0.336, p = 0.286

r = 0.082, p = 0.801

r = 0.242, p = 0.448