condition mean min max 12pM Fe,Midday 0.437755 0.437755 0.437755 12pM Fe,Midnight 0.227624 0.0 0.455248 58pM Fe,Midday 0.0 0.0 0.0 58pM Fe,Midnight 0.0 0.0 0.0 233pM Fe,Midnight 3.6583466666666666 2.18096 5.26637 1160pM Fe,Midday 0.7660631428571428 0.0 1.44201 1160pM Fe,Midnight 0.7853781666666667 0.0 2.2216 High carbon,Dark 4.761654066666667 0.0 10.5714 High carbon,Light 3.262766923076923 0.0 6.87745 Low carbon,Dark 3.55668 3.55668 3.55668 Phloroglucinol 7.146073333333333 5.21186 9.96326 Silicon starvation,12h 2.49069 2.49069 2.49069