condition mean min max 12pM Fe,Midday 20.8383 20.8383 20.8383 12pM Fe,Midnight 24.953249999999997 24.9015 25.005 58pM Fe,Midday 23.099 23.099 23.099 58pM Fe,Midnight 33.50067142857143 22.2798 81.4035 233pM Fe,Midnight 27.1096 26.6868 27.4037 1160pM Fe,Midday 21.364757142857144 19.3331 24.7418 1160pM Fe,Midnight 12.285526666666668 8.29465 18.2696 High carbon,Dark 19.007692666666667 4.71819 28.6906 High carbon,Light 13.284739230769231 6.10332 21.731 Low carbon,Dark 10.4189 10.4189 10.4189 Phloroglucinol 14.64568 8.97594 19.0335 Silicon starvation,12h 28.5334 28.5334 28.5334