condition mean min max 12pM Fe,Midday 50.2032 50.2032 50.2032 12pM Fe,Midnight 58.2954 57.1446 59.4462 58pM Fe,Midday 80.4461 80.4461 80.4461 58pM Fe,Midnight 37.8005 26.5893 88.7889 233pM Fe,Midnight 22.0082 19.7684 25.3542 1160pM Fe,Midday 34.60397142857143 31.0855 37.327 1160pM Fe,Midnight 17.2898725 9.47997 27.0056 High carbon,Dark 18.257802 1.92605 48.2534 High carbon,Light 18.198817692307692 3.27536 48.4826 Low carbon,Dark 26.7869 26.7869 26.7869 Phloroglucinol 4.340156666666667 2.03464 7.82767 Silicon starvation,12h 19.3269 19.3269 19.3269