condition mean min max 12pM Fe,Midday 49.8274 49.8274 49.8274 12pM Fe,Midnight 64.6352 57.3052 71.9652 58pM Fe,Midday 43.398 43.398 43.398 58pM Fe,Midnight 48.21715714285714 0.0 63.0628 233pM Fe,Midnight 65.75073333333333 62.9756 67.4687 1160pM Fe,Midday 46.21182857142857 42.3534 51.9374 1160pM Fe,Midnight 31.523458333333334 25.7018 41.0431 High carbon,Dark 64.78785333333333 10.2201 97.8075 High carbon,Light 64.7076 20.0162 107.906 Low carbon,Dark 87.6356 87.6356 87.6356 Phloroglucinol 36.3728 30.2199 46.5734 Silicon starvation,12h 108.843 108.843 108.843