condition mean min max 12pM Fe,Midday 20.8962 20.8962 20.8962 12pM Fe,Midnight 18.67905 15.006 22.3521 58pM Fe,Midday 18.2258 18.2258 18.2258 58pM Fe,Midnight 13.627942857142857 0.0 19.5989 233pM Fe,Midnight 15.056466666666667 12.6417 16.8395 1160pM Fe,Midday 16.24947142857143 12.3409 20.0601 1160pM Fe,Midnight 12.914183333333334 11.2698 14.9542 High carbon,Dark 14.144038666666667 2.83878 24.1389 High carbon,Light 16.89301 5.25678 32.6876 Low carbon,Dark 13.0971 13.0971 13.0971 Phloroglucinol 18.950866666666666 13.0941 25.8293 Silicon starvation,12h 40.7633 40.7633 40.7633