condition mean min max 12pM Fe,Midday 32.5291 32.5291 32.5291 12pM Fe,Midnight 38.5393 36.2916 40.787 58pM Fe,Midday 35.6206 35.6206 35.6206 58pM Fe,Midnight 31.3437 0.0 38.8544 233pM Fe,Midnight 27.644566666666666 24.937 29.8993 1160pM Fe,Midday 24.603757142857145 21.9235 26.6185 1160pM Fe,Midnight 23.111891666666665 19.2383 27.2719 High carbon,Dark 31.69187266666667 4.54329 58.28 High carbon,Light 17.400580769230768 7.94392 39.5144 Low carbon,Dark 30.3785 30.3785 30.3785 Phloroglucinol 17.97223333333333 14.4195 25.0491 Silicon starvation,12h 28.8612 28.8612 28.8612