condition mean min max 12pM Fe,Midday 45.302 45.302 45.302 12pM Fe,Midnight 42.478449999999995 42.4505 42.5064 58pM Fe,Midday 41.429 41.429 41.429 58pM Fe,Midnight 29.829314285714286 0.0 39.5781 233pM Fe,Midnight 24.21526666666667 23.0622 24.8384 1160pM Fe,Midday 33.12517142857143 30.8178 36.0962 1160pM Fe,Midnight 20.463641666666668 17.2432 24.4067 High carbon,Dark 29.165773333333334 11.9975 87.6451 High carbon,Light 18.779904615384616 6.74545 31.0217 Low carbon,Dark 20.5626 20.5626 20.5626 Phloroglucinol 27.86163333333333 20.5373 36.7268 Silicon starvation,12h 23.1115 23.1115 23.1115