Nutrient

Winter (ppm) (SD)

Summer (ppm) (SD)

NH₄

47.5 (100.4)

61.5 (97.6)

NO₃

93.6 (324.4)

54.6 (167.8)

P-PO₄

0.215 (0.433)

0.315 (0.544)

TDN

123.0 (250.1)

138.6 (380.0)

TDP

0.154 (0.345)

0.247 (0.492)

TN

182.3 (433.1)

160.5 (419.5)

TP

0.484 (1.661)

0.430 (0.564)