condition mean min max 12pM Fe,Midday 14.5809 14.5809 14.5809 12pM Fe,Midnight 9.49865 8.8883 10.109 58pM Fe,Midday 9.16218 9.16218 9.16218 58pM Fe,Midnight 7.715107142857143 0.0 10.4337 233pM Fe,Midnight 5.7488866666666665 4.9778 6.44849 1160pM Fe,Midday 6.633445714285714 5.22075 7.72721 1160pM Fe,Midnight 5.267245833333333 4.21087 5.77627 High carbon,Dark 4.927994 1.90064 8.7588 High carbon,Light 4.8017463846153845 0.754533 9.75261 Low carbon,Dark 4.12059 4.12059 4.12059 Phloroglucinol 8.726513333333333 7.0843 9.95311 Silicon starvation,12h 17.3135 17.3135 17.3135