condition mean min max 12pM Fe,Midday 47.3492 47.3492 47.3492 12pM Fe,Midnight 29.364649999999997 28.659 30.0703 58pM Fe,Midday 27.4879 27.4879 27.4879 58pM Fe,Midnight 18.397085714285716 0.0 24.7712 233pM Fe,Midnight 14.155366666666668 13.1056 15.2282 1160pM Fe,Midday 17.802985714285715 14.2363 23.6411 1160pM Fe,Midnight 17.7649 9.27655 25.1238 High carbon,Dark 15.018427333333333 4.81182 25.8093 High carbon,Light 17.684414615384615 2.3598 41.7629 Low carbon,Dark 14.2483 14.2483 14.2483 Phloroglucinol 22.275066666666667 18.3673 24.3916 Silicon starvation,12h 44.9004 44.9004 44.9004