condition mean min max 12pM Fe,Midday 48.4274 48.4274 48.4274 12pM Fe,Midnight 43.012 39.9685 46.0555 58pM Fe,Midday 50.7174 50.7174 50.7174 58pM Fe,Midnight 23.740885714285714 19.6297 27.2662 233pM Fe,Midnight 11.5998 10.9013 12.2202 1160pM Fe,Midday 20.668585714285715 18.0721 24.1976 1160pM Fe,Midnight 15.455716666666667 10.9653 19.3642 High carbon,Dark 11.913543333333333 1.13775 31.7118 High carbon,Light 7.546215384615384 1.78161 23.7659 Low carbon,Dark 10.7675 10.7675 10.7675 Phloroglucinol 9.712916666666667 6.50515 13.2426 Silicon starvation,12h 4.30428 4.30428 4.30428