condition mean min max 12pM Fe,Midday 46.9278 46.9278 46.9278 12pM Fe,Midnight 44.6885 42.4815 46.8955 58pM Fe,Midday 46.2572 46.2572 46.2572 58pM Fe,Midnight 36.1337 0.0 48.3924 233pM Fe,Midnight 38.973 38.4355 39.567 1160pM Fe,Midday 48.69121428571429 41.8101 56.693 1160pM Fe,Midnight 18.772658333333332 14.6971 27.3705 High carbon,Dark 32.923639333333334 8.49119 54.9819 High carbon,Light 41.1879076923077 2.86291 86.5296 Low carbon,Dark 33.5842 33.5842 33.5842 Phloroglucinol 17.3695 10.2084 24.683 Silicon starvation,12h 61.5633 61.5633 61.5633