condition mean min max 12pM Fe,Midday 19.5806 19.5806 19.5806 12pM Fe,Midnight 19.0597 18.7354 19.384 58pM Fe,Midday 20.8243 20.8243 20.8243 58pM Fe,Midnight 19.47187142857143 0.0 24.0049 233pM Fe,Midnight 28.52306666666667 28.1339 29.1777 1160pM Fe,Midday 10.225724285714286 6.72501 12.9001 1160pM Fe,Midnight 18.5363575 9.99009 30.5757 High carbon,Dark 25.457513333333335 10.1457 52.9277 High carbon,Light 19.135235384615385 1.84877 40.5673 Low carbon,Dark 19.5801 19.5801 19.5801 Phloroglucinol 10.419373333333333 7.02282 13.8533 Silicon starvation,12h 41.3492 41.3492 41.3492