condition mean min max 12pM Fe,Midday 105.047 105.047 105.047 12pM Fe,Midnight 54.8057 45.8579 63.7535 58pM Fe,Midday 52.8318 52.8318 52.8318 58pM Fe,Midnight 53.59431428571428 31.1916 113.503 233pM Fe,Midnight 20.709733333333336 18.6914 23.2493 1160pM Fe,Midday 40.23815714285714 31.3632 48.2083 1160pM Fe,Midnight 15.445458333333333 11.8116 19.2864 High carbon,Dark 37.34205333333333 17.7119 74.4805 High carbon,Light 39.637284615384615 19.0743 55.5743 Low carbon,Dark 24.3852 24.3852 24.3852 Phloroglucinol 78.38103333333333 49.4561 124.864 Silicon starvation,12h 59.7682 59.7682 59.7682