condition mean min max 12pM Fe,Midday 22.9513 22.9513 22.9513 12pM Fe,Midnight 27.5994 25.767 29.4318 58pM Fe,Midday 18.9237 18.9237 18.9237 58pM Fe,Midnight 20.858557142857144 0.0 25.9748 233pM Fe,Midnight 29.504199999999997 28.0737 31.365 1160pM Fe,Midday 18.853414285714287 16.0911 21.4904 1160pM Fe,Midnight 13.6921975 5.05055 29.1653 High carbon,Dark 25.302563333333335 7.28634 45.4703 High carbon,Light 20.14614153846154 3.37793 46.2512 Low carbon,Dark 19.9189 19.9189 19.9189 Phloroglucinol 9.397126666666667 8.07957 10.306 Silicon starvation,12h 33.9819 33.9819 33.9819