condition mean min max 12pM Fe,Midday 22.2946 22.2946 22.2946 12pM Fe,Midnight 27.1809 27.01 27.3518 58pM Fe,Midday 20.6425 20.6425 20.6425 58pM Fe,Midnight 24.030485714285714 0.0 33.269 233pM Fe,Midnight 15.707433333333334 15.0624 16.1 1160pM Fe,Midday 13.363742857142856 11.9415 16.1766 1160pM Fe,Midnight 37.71601666666667 15.0639 61.9093 High carbon,Dark 13.789283333333334 6.37497 26.3991 High carbon,Light 13.54519 7.4421 24.6022 Low carbon,Dark 13.8189 13.8189 13.8189 Phloroglucinol 12.92117 8.20941 16.677 Silicon starvation,12h 15.1043 15.1043 15.1043