condition mean min max 12pM Fe,Midday 14.7852 14.7852 14.7852 12pM Fe,Midnight 21.012 18.96 23.064 58pM Fe,Midday 39.2479 39.2479 39.2479 58pM Fe,Midnight 26.742085714285714 0.0 37.4365 233pM Fe,Midnight 36.9739 32.0785 43.7369 1160pM Fe,Midday 17.947742857142856 11.3589 24.352 1160pM Fe,Midnight 54.915375 14.8584 94.5012 High carbon,Dark 40.965361333333334 7.44822 85.824 High carbon,Light 28.815627692307693 0.0 69.634 Low carbon,Dark 30.0318 30.0318 30.0318 Phloroglucinol 40.973 16.3581 57.9207 Silicon starvation,12h 27.34 27.34 27.34