condition mean min max 12pM Fe,Midday 39.0803 39.0803 39.0803 12pM Fe,Midnight 47.605599999999995 43.8934 51.3178 58pM Fe,Midday 44.6083 44.6083 44.6083 58pM Fe,Midnight 27.186585714285712 0.0 34.3321 233pM Fe,Midnight 52.34096666666667 48.2524 56.9305 1160pM Fe,Midday 28.185642857142856 23.5879 31.2247 1160pM Fe,Midnight 24.71465 16.5654 37.0453 High carbon,Dark 51.742039999999996 22.5184 109.633 High carbon,Light 57.591484615384616 23.4429 101.553 Low carbon,Dark 55.8836 55.8836 55.8836 Phloroglucinol 28.998466666666666 25.2015 33.3047 Silicon starvation,12h 40.9133 40.9133 40.9133