condition mean min max 12pM Fe,Midday 5.34754 5.34754 5.34754 12pM Fe,Midnight 20.0377 15.5714 24.504 58pM Fe,Midday 8.51715 8.51715 8.51715 58pM Fe,Midnight 29.24587142857143 0.0 66.171 233pM Fe,Midnight 40.77283333333333 38.3741 43.315 1160pM Fe,Midday 12.378505714285714 7.70035 19.4943 1160pM Fe,Midnight 39.61405 17.0347 83.0218 High carbon,Dark 17.558798666666664 0.0 44.4573 High carbon,Light 10.88106076923077 0.0 51.1451 Low carbon,Dark 6.95164 6.95164 6.95164 Phloroglucinol 1.0161796666666667 0.446787 1.7002 Silicon starvation,12h 16.6328 16.6328 16.6328