condition mean min max 12pM Fe,Midday 39.4493 39.4493 39.4493 12pM Fe,Midnight 27.3405 26.9906 27.6904 58pM Fe,Midday 49.451 49.451 49.451 58pM Fe,Midnight 23.799785714285715 0.0 31.3468 233pM Fe,Midnight 14.595 13.3109 15.9812 1160pM Fe,Midday 35.253457142857144 31.2822 39.3409 1160pM Fe,Midnight 16.21006 7.74128 23.9231 High carbon,Dark 27.154984 3.01654 62.649 High carbon,Light 21.143035384615384 4.58375 53.7822 Low carbon,Dark 26.991 26.991 26.991 Phloroglucinol 8.202876666666667 7.11027 9.31259 Silicon starvation,12h 56.8519 56.8519 56.8519