condition mean min max 12pM Fe,Midday 36.8508 36.8508 36.8508 12pM Fe,Midnight 37.3126 33.8092 40.816 58pM Fe,Midday 20.4127 20.4127 20.4127 58pM Fe,Midnight 23.648242857142858 0.0 33.3075 233pM Fe,Midnight 17.53783333333333 16.4192 19.5007 1160pM Fe,Midday 18.83322857142857 15.7853 21.5709 1160pM Fe,Midnight 13.331195833333334 8.18945 16.4187 High carbon,Dark 15.19165 3.75163 25.6517 High carbon,Light 14.945623076923077 1.05827 31.8673 Low carbon,Dark 11.6841 11.6841 11.6841 Phloroglucinol 44.46543333333333 35.6701 49.8047 Silicon starvation,12h 46.025 46.025 46.025