condition mean min max 12pM Fe,Midday 38.0304 38.0304 38.0304 12pM Fe,Midnight 29.9566 26.9119 33.0013 58pM Fe,Midday 27.1991 27.1991 27.1991 58pM Fe,Midnight 19.5015 0.0 26.7874 233pM Fe,Midnight 17.509666666666668 15.3895 20.2117 1160pM Fe,Midday 21.394014285714285 16.538 23.6757 1160pM Fe,Midnight 11.391533333333333 10.0707 12.8918 High carbon,Dark 14.696557333333333 4.34788 28.9101 High carbon,Light 11.591351538461538 1.68338 26.4936 Low carbon,Dark 15.5656 15.5656 15.5656 Phloroglucinol 21.5645 13.1968 36.6248 Silicon starvation,12h 25.8681 25.8681 25.8681