condition mean min max 12pM Fe,Midday 37.3841 37.3841 37.3841 12pM Fe,Midnight 24.2315 23.575 24.888 58pM Fe,Midday 28.8563 28.8563 28.8563 58pM Fe,Midnight 13.562757142857143 0.0 21.334 233pM Fe,Midnight 6.12203 4.53271 7.88912 1160pM Fe,Midday 11.993152857142857 9.16617 13.7676 1160pM Fe,Midnight 8.543539166666667 3.53432 12.9926 High carbon,Dark 9.101157133333334 0.597533 32.857 High carbon,Light 9.109952307692307 0.0 27.3368 Low carbon,Dark 10.3401 10.3401 10.3401 Phloroglucinol 3.36259 1.00574 7.58676 Silicon starvation,12h 0.226281 0.226281 0.226281