condition mean min max 12pM Fe,Midday 19.0565 19.0565 19.0565 12pM Fe,Midnight 9.933060000000001 7.10932 12.7568 58pM Fe,Midday 13.2023 13.2023 13.2023 58pM Fe,Midnight 8.347385714285714 0.0 13.0455 233pM Fe,Midnight 2.5598966666666665 2.24221 2.90331 1160pM Fe,Midday 6.70295 3.7383 7.94664 1160pM Fe,Midnight 4.046574166666667 2.67869 5.83058 High carbon,Dark 6.01098 0.0 11.9659 High carbon,Light 4.646010307692308 0.0 10.9779 Low carbon,Dark 5.1429 5.1429 5.1429 Phloroglucinol 1.9649456666666665 0.566637 3.71602 Silicon starvation,12h 4.44721 4.44721 4.44721