condition mean min max 12pM Fe,Midday 44.521 44.521 44.521 12pM Fe,Midnight 36.96625 33.8192 40.1133 58pM Fe,Midday 41.4496 41.4496 41.4496 58pM Fe,Midnight 25.9546 0.0 34.472 233pM Fe,Midnight 24.6399 23.1647 25.5564 1160pM Fe,Midday 27.049442857142857 24.1995 29.8352 1160pM Fe,Midnight 21.918233333333333 15.5826 28.9381 High carbon,Dark 23.00774 10.3882 32.3743 High carbon,Light 18.411874615384615 5.46994 32.2684 Low carbon,Dark 18.5581 18.5581 18.5581 Phloroglucinol 26.940666666666665 23.0462 34.1567 Silicon starvation,12h 44.9351 44.9351 44.9351