condition mean min max 12pM Fe,Midday 82.0428 82.0428 82.0428 12pM Fe,Midnight 57.631699999999995 56.3917 58.8717 58pM Fe,Midday 93.6479 93.6479 93.6479 58pM Fe,Midnight 32.64427142857143 0.0 40.8852 233pM Fe,Midnight 44.458 42.2122 47.0062 1160pM Fe,Midday 69.28164285714286 58.4137 86.5893 1160pM Fe,Midnight 35.224983333333334 25.3568 44.485 High carbon,Dark 48.150996666666664 2.60065 86.6736 High carbon,Light 56.29283076923077 19.3199 143.042 Low carbon,Dark 55.9929 55.9929 55.9929 Phloroglucinol 24.487666666666666 18.5077 33.7149 Silicon starvation,12h 86.8244 86.8244 86.8244