condition mean min max 12pM Fe,Midday 16.695 16.695 16.695 12pM Fe,Midnight 22.537 22.1875 22.8865 58pM Fe,Midday 12.4224 12.4224 12.4224 58pM Fe,Midnight 15.476942857142857 0.0 23.588 233pM Fe,Midnight 19.6075 18.9796 20.0854 1160pM Fe,Midday 14.117442857142857 12.8625 15.4806 1160pM Fe,Midnight 15.509534166666667 8.8172 24.8225 High carbon,Dark 18.357984666666667 1.20275 34.8378 High carbon,Light 11.80080923076923 3.57403 24.3258 Low carbon,Dark 23.4294 23.4294 23.4294 Phloroglucinol 7.702136666666666 6.41958 8.53075 Silicon starvation,12h 20.9409 20.9409 20.9409