condition mean min max 12pM Fe,Midday 23.4927 23.4927 23.4927 12pM Fe,Midnight 26.537599999999998 25.3862 27.689 58pM Fe,Midday 19.9559 19.9559 19.9559 58pM Fe,Midnight 34.78031428571428 21.1499 111.351 233pM Fe,Midnight 14.750733333333333 14.2801 15.0207 1160pM Fe,Midday 13.627105714285713 9.32354 18.3085 1160pM Fe,Midnight 24.689633333333333 13.4544 32.1072 High carbon,Dark 15.396644 4.92242 57.0927 High carbon,Light 10.366630769230769 1.84406 28.1561 Low carbon,Dark 10.1799 10.1799 10.1799 Phloroglucinol 32.6866 26.3017 36.7061 Silicon starvation,12h 40.6344 40.6344 40.6344