condition mean min max 12pM Fe,Midday 40.7826 40.7826 40.7826 12pM Fe,Midnight 40.40345 38.8472 41.9597 58pM Fe,Midday 32.4254 32.4254 32.4254 58pM Fe,Midnight 31.3081 24.8807 42.0222 233pM Fe,Midnight 32.688 31.8765 33.9278 1160pM Fe,Midday 32.906614285714284 30.373 36.2192 1160pM Fe,Midnight 18.870216666666668 16.1587 22.7707 High carbon,Dark 25.2185 14.4484 41.6293 High carbon,Light 25.28691 6.82003 52.5335 Low carbon,Dark 24.2031 24.2031 24.2031 Phloroglucinol 37.99353333333333 27.9509 51.1409 Silicon starvation,12h 34.5707 34.5707 34.5707