condition mean min max 12pM Fe,Midday 53.7441 53.7441 53.7441 12pM Fe,Midnight 40.49745 34.5764 46.4185 58pM Fe,Midday 38.689 38.689 38.689 58pM Fe,Midnight 22.552357142857144 0.0 31.7042 233pM Fe,Midnight 15.923466666666666 12.1122 18.1533 1160pM Fe,Midday 24.11575714285714 18.2181 33.6676 1160pM Fe,Midnight 9.1713275 4.58525 14.8794 High carbon,Dark 30.279642 9.54323 75.5125 High carbon,Light 29.79352923076923 0.0 62.5269 Low carbon,Dark 31.0843 31.0843 31.0843 Phloroglucinol 24.113733333333332 18.4288 31.651 Silicon starvation,12h 26.9507 26.9507 26.9507