condition mean min max 12pM Fe,Midday 109.668 109.668 109.668 12pM Fe,Midnight 72.3942 68.7546 76.0338 58pM Fe,Midday 70.0842 70.0842 70.0842 58pM Fe,Midnight 43.36734285714286 0.0 69.0782 233pM Fe,Midnight 37.7159 33.9915 45.0072 1160pM Fe,Midday 49.880542857142856 34.295 67.0909 1160pM Fe,Midnight 19.024275 6.26077 34.5924 High carbon,Dark 41.995784666666665 8.57366 69.3388 High carbon,Light 42.82726153846154 19.1298 72.9706 Low carbon,Dark 69.3027 69.3027 69.3027 Phloroglucinol 23.704066666666666 19.2596 27.673 Silicon starvation,12h 53.1538 53.1538 53.1538