condition mean min max 12pM Fe,Midday 0.287102 0.287102 0.287102 12pM Fe,Midnight 0.887645 0.59715 1.17814 58pM Fe,Midday 1.27021 1.27021 1.27021 58pM Fe,Midnight 1.268993 0.0 3.87707 233pM Fe,Midnight 1.1359979999999998 0.889868 1.60919 1160pM Fe,Midday 0.9122698571428571 0.189149 1.58041 1160pM Fe,Midnight 0.9813184166666666 0.0 2.04037 High carbon,Dark 4.264692266666667 0.0 14.4969 High carbon,Light 8.84337176923077 0.0 53.2528 Low carbon,Dark 19.1278 19.1278 19.1278 Phloroglucinol 8.486633333333334 6.8461 9.43861 Silicon starvation,12h 12.7415 12.7415 12.7415