condition mean min max 12pM Fe,Midday 75.257 75.257 75.257 12pM Fe,Midnight 74.26905 70.7389 77.7992 58pM Fe,Midday 79.3969 79.3969 79.3969 58pM Fe,Midnight 57.41922857142857 47.6236 102.896 233pM Fe,Midnight 46.685266666666664 44.6778 50.2927 1160pM Fe,Midday 42.29307142857143 35.8913 49.3672 1160pM Fe,Midnight 42.19220833333333 32.1134 52.8823 High carbon,Dark 41.228606666666664 14.6803 84.5721 High carbon,Light 34.81141538461539 21.9309 51.8154 Low carbon,Dark 35.2759 35.2759 35.2759 Phloroglucinol 29.3421 20.1328 45.751 Silicon starvation,12h 39.3605 39.3605 39.3605