condition mean min max 12pM Fe,Midday 40.4679 40.4679 40.4679 12pM Fe,Midnight 35.5911 33.2521 37.9301 58pM Fe,Midday 37.5185 37.5185 37.5185 58pM Fe,Midnight 29.794485714285713 22.9073 36.2764 233pM Fe,Midnight 17.8596 17.5447 18.0555 1160pM Fe,Midday 21.337442857142857 19.9109 22.2966 1160pM Fe,Midnight 35.94042833333334 9.30574 65.6907 High carbon,Dark 15.951301333333333 5.87897 24.801 High carbon,Light 12.30725923076923 1.97269 26.0082 Low carbon,Dark 9.31933 9.31933 9.31933 Phloroglucinol 33.403533333333336 28.5806 40.7398 Silicon starvation,12h 31.8243 31.8243 31.8243