condition mean min max 12pM Fe,Midday 37.7953 37.7953 37.7953 12pM Fe,Midnight 21.3768 21.2126 21.541 58pM Fe,Midday 18.5795 18.5795 18.5795 58pM Fe,Midnight 14.238871428571429 0.0 21.4546 233pM Fe,Midnight 13.508 12.3293 14.4347 1160pM Fe,Midday 30.303628571428572 26.7854 33.5954 1160pM Fe,Midnight 4.994018333333333 2.7882 8.26395 High carbon,Dark 10.0435102 0.950843 30.222 High carbon,Light 7.496674615384616 1.41274 21.5169 Low carbon,Dark 5.84914 5.84914 5.84914 Phloroglucinol 7.9505 5.26301 13.275 Silicon starvation,12h 19.7977 19.7977 19.7977