condition mean min max 12pM Fe,Midday 86.1674 86.1674 86.1674 12pM Fe,Midnight 58.34615 55.5061 61.1862 58pM Fe,Midday 50.8483 50.8483 50.8483 58pM Fe,Midnight 35.614871428571426 0.0 45.8972 233pM Fe,Midnight 31.11466666666667 29.0019 33.548 1160pM Fe,Midday 30.0239 27.2244 37.4182 1160pM Fe,Midnight 20.055125 8.524 35.3102 High carbon,Dark 43.28424666666667 14.1901 69.7881 High carbon,Light 30.317283846153845 5.32119 64.1489 Low carbon,Dark 23.0257 23.0257 23.0257 Phloroglucinol 20.504266666666666 16.2657 23.1562 Silicon starvation,12h 21.6389 21.6389 21.6389