condition mean min max 12pM Fe,Midday 37.6182 37.6182 37.6182 12pM Fe,Midnight 38.94155 34.0501 43.833 58pM Fe,Midday 30.2043 30.2043 30.2043 58pM Fe,Midnight 26.4021 0.0 33.906 233pM Fe,Midnight 21.587266666666668 19.7207 23.4275 1160pM Fe,Midday 17.139 11.7743 22.0795 1160pM Fe,Midnight 21.288466666666668 11.699 30.513 High carbon,Dark 18.8724438 0.447667 54.8691 High carbon,Light 15.421927461538461 0.338348 52.2154 Low carbon,Dark 21.5081 21.5081 21.5081 Phloroglucinol 0.7010716666666666 0.293617 1.01857 Silicon starvation,12h 0.132121 0.132121 0.132121