condition mean min max 12pM Fe,Midday 36.4942 36.4942 36.4942 12pM Fe,Midnight 49.1616 47.1135 51.2097 58pM Fe,Midday 22.2702 22.2702 22.2702 58pM Fe,Midnight 28.9948 0.0 41.8226 233pM Fe,Midnight 20.946066666666667 19.9202 21.5955 1160pM Fe,Midday 19.238157142857144 16.1209 21.4867 1160pM Fe,Midnight 12.624965833333333 7.70431 17.7624 High carbon,Dark 20.175848666666667 2.00103 53.5331 High carbon,Light 17.474369692307693 0.823166 43.7414 Low carbon,Dark 25.4475 25.4475 25.4475 Phloroglucinol 55.1504 46.0119 71.1619 Silicon starvation,12h 25.4579 25.4579 25.4579