condition mean min max 12pM Fe,Midday 18.7972 18.7972 18.7972 12pM Fe,Midnight 11.8537 11.2829 12.4245 58pM Fe,Midday 21.5442 21.5442 21.5442 58pM Fe,Midnight 8.191372857142857 0.0 10.5412 233pM Fe,Midnight 16.4845 15.8703 17.0483 1160pM Fe,Midday 15.263585714285714 14.0534 16.2719 1160pM Fe,Midnight 7.3730275 5.63916 9.15582 High carbon,Dark 13.725983333333334 8.52128 18.8332 High carbon,Light 13.499768461538462 1.70889 22.2918 Low carbon,Dark 12.2999 12.2999 12.2999 Phloroglucinol 7.14827 6.46039 8.42308 Silicon starvation,12h 24.0458 24.0458 24.0458