condition mean min max 12pM Fe,Midday 26.6549 26.6549 26.6549 12pM Fe,Midnight 29.2245 25.2 33.249 58pM Fe,Midday 23.8535 23.8535 23.8535 58pM Fe,Midnight 20.12442857142857 0.0 26.116 233pM Fe,Midnight 16.6734 15.6567 18.028 1160pM Fe,Midday 18.425042857142856 13.7693 22.3902 1160pM Fe,Midnight 6.514005833333334 4.3517 9.80638 High carbon,Dark 14.793637333333333 6.50212 34.1796 High carbon,Light 12.516935923076923 0.713277 22.9446 Low carbon,Dark 15.7503 15.7503 15.7503 Phloroglucinol 15.559933333333333 12.0643 19.8109 Silicon starvation,12h 29.9869 29.9869 29.9869