condition mean min max 12pM Fe,Midday 37.8651 37.8651 37.8651 12pM Fe,Midnight 31.2773 26.6006 35.954 58pM Fe,Midday 26.5853 26.5853 26.5853 58pM Fe,Midnight 22.952142857142857 0.0 33.2622 233pM Fe,Midnight 24.204433333333334 22.707 26.5814 1160pM Fe,Midday 21.080828571428572 16.3329 23.3772 1160pM Fe,Midnight 15.526020833333334 9.83315 23.573 High carbon,Dark 29.42532 10.4372 47.3332 High carbon,Light 25.775661538461538 10.0353 40.4018 Low carbon,Dark 14.0447 14.0447 14.0447 Phloroglucinol 11.36201 6.76538 19.0677 Silicon starvation,12h 37.2337 37.2337 37.2337