condition mean min max 12pM Fe,Midday 107.087 107.087 107.087 12pM Fe,Midnight 44.47665 42.0049 46.9484 58pM Fe,Midday 75.2469 75.2469 75.2469 58pM Fe,Midnight 38.81807142857143 0.0 53.8696 233pM Fe,Midnight 18.607833333333332 15.6918 20.6074 1160pM Fe,Midday 28.826428571428572 23.3906 34.6753 1160pM Fe,Midnight 15.365301666666666 3.2529 25.118 High carbon,Dark 32.543208 6.6559 63.4661 High carbon,Light 22.004136923076924 4.94458 50.206 Low carbon,Dark 27.296 27.296 27.296 Phloroglucinol 12.630086666666667 6.57876 20.0278 Silicon starvation,12h 22.699 22.699 22.699