condition mean min max 12pM Fe,Midday 28.5599 28.5599 28.5599 12pM Fe,Midnight 29.486600000000003 28.5649 30.4083 58pM Fe,Midday 28.2796 28.2796 28.2796 58pM Fe,Midnight 22.604014285714285 20.1096 25.4452 233pM Fe,Midnight 18.014466666666667 17.6154 18.2765 1160pM Fe,Midday 24.754428571428573 23.7537 26.3502 1160pM Fe,Midnight 12.618583333333333 10.8281 14.763 High carbon,Dark 24.332604 7.02322 79.4146 High carbon,Light 21.27067 1.84223 57.1461 Low carbon,Dark 13.6086 13.6086 13.6086 Phloroglucinol 17.078533333333333 12.1053 24.8222 Silicon starvation,12h 16.7587 16.7587 16.7587