condition mean min max 12pM Fe,Midday 22.6711 22.6711 22.6711 12pM Fe,Midnight 19.8562 19.397 20.3154 58pM Fe,Midday 19.109 19.109 19.109 58pM Fe,Midnight 17.6892 13.8285 31.8548 233pM Fe,Midnight 11.955766666666667 11.1652 12.369 1160pM Fe,Midday 13.998342857142857 12.1204 15.7812 1160pM Fe,Midnight 8.168044166666666 7.01049 10.3052 High carbon,Dark 11.339915333333334 4.80899 17.7044 High carbon,Light 13.328105384615386 1.79364 29.0132 Low carbon,Dark 9.46475 9.46475 9.46475 Phloroglucinol 15.568033333333332 13.8799 17.8879 Silicon starvation,12h 17.0289 17.0289 17.0289