condition mean min max 12pM Fe,Midday 41.2066 41.2066 41.2066 12pM Fe,Midnight 46.98835 46.3784 47.5983 58pM Fe,Midday 38.5236 38.5236 38.5236 58pM Fe,Midnight 34.318157142857146 31.9178 37.6565 233pM Fe,Midnight 31.104233333333333 30.0822 32.176 1160pM Fe,Midday 33.498042857142856 30.1111 35.6467 1160pM Fe,Midnight 23.873350000000002 17.0232 29.6109 High carbon,Dark 28.45207333333333 12.3172 55.3549 High carbon,Light 23.172756153846155 4.24063 39.9554 Low carbon,Dark 30.9837 30.9837 30.9837 Phloroglucinol 14.701566666666666 11.5498 18.692 Silicon starvation,12h 27.7848 27.7848 27.7848