condition mean min max 12pM Fe,Midday 7.63019 7.63019 7.63019 12pM Fe,Midnight 8.204585 7.49426 8.91491 58pM Fe,Midday 4.50103 4.50103 4.50103 58pM Fe,Midnight 5.960802857142857 0.0 9.0534 233pM Fe,Midnight 4.192746666666666 3.75766 4.9927 1160pM Fe,Midday 3.296632857142857 2.09455 5.00022 1160pM Fe,Midnight 2.461644166666667 1.11564 3.89909 High carbon,Dark 4.395856333333334 0.740165 11.6762 High carbon,Light 2.3589276923076925 0.605434 4.658 Low carbon,Dark 4.13293 4.13293 4.13293 Phloroglucinol 5.080066666666666 1.32813 10.8301 Silicon starvation,12h 4.46193 4.46193 4.46193