condition mean min max 12pM Fe,Midday 21.4384 21.4384 21.4384 12pM Fe,Midnight 31.8428 28.9326 34.753 58pM Fe,Midday 19.6938 19.6938 19.6938 58pM Fe,Midnight 19.274085714285714 0.0 26.796 233pM Fe,Midnight 27.7254 27.212 28.6082 1160pM Fe,Midday 20.754314285714287 17.5433 23.138 1160pM Fe,Midnight 9.960354166666667 7.17539 14.5209 High carbon,Dark 17.627677333333335 4.37115 30.0088 High carbon,Light 10.501730769230768 0.0 30.5219 Low carbon,Dark 15.9557 15.9557 15.9557 Phloroglucinol 22.469766666666665 20.5097 24.9348 Silicon starvation,12h 33.6138 33.6138 33.6138