condition mean min max 12pM Fe,Midday 54.4794 54.4794 54.4794 12pM Fe,Midnight 38.8172 36.8655 40.7689 58pM Fe,Midday 54.6444 54.6444 54.6444 58pM Fe,Midnight 36.50125714285714 25.3792 66.3243 233pM Fe,Midnight 21.627666666666666 19.5203 23.2724 1160pM Fe,Midday 28.312742857142858 26.4274 31.6236 1160pM Fe,Midnight 20.104716666666665 17.0024 23.6714 High carbon,Dark 22.73062 9.1669 35.2255 High carbon,Light 22.431167692307692 5.93126 35.8842 Low carbon,Dark 18.4936 18.4936 18.4936 Phloroglucinol 21.66443333333333 18.2382 26.8207 Silicon starvation,12h 46.9202 46.9202 46.9202