condition mean min max 12pM Fe,Midday 4.64121 4.64121 4.64121 12pM Fe,Midnight 18.4461 17.2142 19.678 58pM Fe,Midday 8.84533 8.84533 8.84533 58pM Fe,Midnight 12.312957142857142 0.0 20.6237 233pM Fe,Midnight 19.144233333333332 17.2624 22.6055 1160pM Fe,Midday 4.934247142857143 2.89826 6.1989 1160pM Fe,Midnight 10.510370833333333 5.99033 17.9868 High carbon,Dark 11.047282666666666 2.82924 20.8598 High carbon,Light 4.684770769230769 0.48361 16.2153 Low carbon,Dark 6.96166 6.96166 6.96166 Phloroglucinol 4.648443333333334 2.01344 6.09424 Silicon starvation,12h 28.2352 28.2352 28.2352