condition mean min max 12pM Fe,Midday 37.8293 37.8293 37.8293 12pM Fe,Midnight 24.9831 23.131 26.8352 58pM Fe,Midday 32.5864 32.5864 32.5864 58pM Fe,Midnight 18.110114285714285 0.0 24.978 233pM Fe,Midnight 26.05216666666667 24.495 27.488 1160pM Fe,Midday 28.799442857142857 25.4779 31.9301 1160pM Fe,Midnight 29.300575833333333 8.10048 45.6031 High carbon,Dark 40.317213333333335 14.7892 100.5 High carbon,Light 54.27303076923077 12.9789 122.588 Low carbon,Dark 24.4256 24.4256 24.4256 Phloroglucinol 61.709633333333336 42.1587 83.7867 Silicon starvation,12h 73.6937 73.6937 73.6937