condition mean min max 12pM Fe,Midday 42.4829 42.4829 42.4829 12pM Fe,Midnight 38.1277 36.7677 39.4877 58pM Fe,Midday 33.0497 33.0497 33.0497 58pM Fe,Midnight 22.3788 0.0 30.1901 233pM Fe,Midnight 17.778466666666667 15.907 19.3169 1160pM Fe,Midday 32.21071428571428 29.1157 38.0363 1160pM Fe,Midnight 10.9507225 7.46974 12.9108 High carbon,Dark 16.355779333333334 5.47628 27.8553 High carbon,Light 20.03387846153846 4.3642 46.598 Low carbon,Dark 19.9223 19.9223 19.9223 Phloroglucinol 14.960766666666666 12.5065 19.0367 Silicon starvation,12h 23.847 23.847 23.847