condition mean min max 12pM Fe,Midday 1.70875 1.70875 1.70875 12pM Fe,Midnight 1.765015 1.75299 1.77704 58pM Fe,Midday 0.907191 0.907191 0.907191 58pM Fe,Midnight 1.85152 0.0 3.74973 233pM Fe,Midnight 6.6983733333333335 6.14365 7.14085 1160pM Fe,Midday 1.6511271428571428 1.12576 2.10042 1160pM Fe,Midnight 1.4704050833333333 0.513962 3.70606 High carbon,Dark 30.651353333333333 9.2081 65.0954 High carbon,Light 17.148013846153844 1.91762 32.4127 Low carbon,Dark 7.77465 7.77465 7.77465 Phloroglucinol 0.29367333333333334 0.0 0.648185 Silicon starvation,12h 0.0 0.0 0.0