condition mean min max 12pM Fe,Midday 30.3949 30.3949 30.3949 12pM Fe,Midnight 27.23805 25.5717 28.9044 58pM Fe,Midday 18.1313 18.1313 18.1313 58pM Fe,Midnight 24.1504 14.8445 60.702 233pM Fe,Midnight 16.136466666666667 13.2988 19.1592 1160pM Fe,Midday 16.747157142857144 14.6248 19.8076 1160pM Fe,Midnight 8.469386666666667 5.00767 12.2389 High carbon,Dark 17.020140666666666 7.33113 27.9226 High carbon,Light 15.384467692307693 1.20633 34.584 Low carbon,Dark 19.1458 19.1458 19.1458 Phloroglucinol 17.846833333333333 16.9062 18.4976 Silicon starvation,12h 29.7297 29.7297 29.7297