condition mean min max 12pM Fe,Midday 43.8045 43.8045 43.8045 12pM Fe,Midnight 43.1499 39.3212 46.9786 58pM Fe,Midday 57.5348 57.5348 57.5348 58pM Fe,Midnight 22.7521 0.0 31.0658 233pM Fe,Midnight 19.265 16.5471 21.3126 1160pM Fe,Midday 40.75481428571428 37.2333 47.7844 1160pM Fe,Midnight 9.02571 6.36279 13.2542 High carbon,Dark 25.112307333333334 9.76321 43.0469 High carbon,Light 18.720914615384615 4.83531 45.0051 Low carbon,Dark 36.7025 36.7025 36.7025 Phloroglucinol 14.794933333333333 12.5489 17.2536 Silicon starvation,12h 20.6397 20.6397 20.6397