condition mean min max 12pM Fe,Midday 25.3589 25.3589 25.3589 12pM Fe,Midnight 25.098399999999998 22.049 28.1478 58pM Fe,Midday 15.8175 15.8175 15.8175 58pM Fe,Midnight 20.094014285714284 0.0 27.1025 233pM Fe,Midnight 15.2825 12.1121 20.5316 1160pM Fe,Midday 17.81532857142857 13.1618 20.9226 1160pM Fe,Midnight 15.9186025 7.7689 24.6203 High carbon,Dark 19.277165333333333 5.2057 51.5448 High carbon,Light 10.419633846153847 3.56251 23.1936 Low carbon,Dark 8.78189 8.78189 8.78189 Phloroglucinol 18.106166666666667 15.6301 19.712 Silicon starvation,12h 46.5968 46.5968 46.5968