condition mean min max 12pM Fe,Midday 46.4086 46.4086 46.4086 12pM Fe,Midnight 49.983000000000004 46.82 53.146 58pM Fe,Midday 38.7452 38.7452 38.7452 58pM Fe,Midnight 35.44822857142857 29.0286 54.8094 233pM Fe,Midnight 24.458433333333332 23.9897 25.2847 1160pM Fe,Midday 19.986685714285716 17.8347 21.1615 1160pM Fe,Midnight 14.4652 11.2899 18.7502 High carbon,Dark 17.849389333333335 4.15424 33.5537 High carbon,Light 10.158833692307693 0.835408 24.4673 Low carbon,Dark 26.8077 26.8077 26.8077 Phloroglucinol 11.086063333333334 8.88849 12.1851 Silicon starvation,12h 19.9134 19.9134 19.9134