condition mean min max 12pM Fe,Midday 81.4624 81.4624 81.4624 12pM Fe,Midnight 78.93025 75.9745 81.886 58pM Fe,Midday 80.2903 80.2903 80.2903 58pM Fe,Midnight 57.79768571428571 0.0 72.6488 233pM Fe,Midnight 61.2474 60.6218 61.676 1160pM Fe,Midday 72.19534285714286 65.7101 79.7025 1160pM Fe,Midnight 68.36415 40.144 85.5393 High carbon,Dark 53.40474 23.1161 91.9087 High carbon,Light 51.85925384615385 12.1744 92.6479 Low carbon,Dark 55.1163 55.1163 55.1163 Phloroglucinol 57.416333333333334 51.0134 68.0093 Silicon starvation,12h 67.2426 67.2426 67.2426