condition mean min max 12pM Fe,Midday 39.8491 39.8491 39.8491 12pM Fe,Midnight 35.53425 31.8564 39.2121 58pM Fe,Midday 35.7401 35.7401 35.7401 58pM Fe,Midnight 21.3314 0.0 32.9466 233pM Fe,Midnight 20.112733333333335 18.7392 21.1734 1160pM Fe,Midday 22.0614 17.2672 26.432 1160pM Fe,Midnight 8.754504166666667 5.56551 14.7401 High carbon,Dark 17.470070666666665 6.79386 31.3515 High carbon,Light 13.09686 3.09738 20.5255 Low carbon,Dark 13.215 13.215 13.215 Phloroglucinol 8.510946666666666 4.79874 10.7119 Silicon starvation,12h 26.8373 26.8373 26.8373