condition mean min max 12pM Fe,Midday 37.7112 37.7112 37.7112 12pM Fe,Midnight 36.56335 35.9726 37.1541 58pM Fe,Midday 28.978 28.978 28.978 58pM Fe,Midnight 30.68202857142857 0.0 45.5303 233pM Fe,Midnight 28.0535 25.1335 31.1694 1160pM Fe,Midday 26.939814285714284 22.6185 32.4728 1160pM Fe,Midnight 23.354908333333334 19.8434 25.5312 High carbon,Dark 29.90872 12.1297 63.8845 High carbon,Light 26.014141538461537 2.72645 56.0265 Low carbon,Dark 42.4655 42.4655 42.4655 Phloroglucinol 20.347533333333335 14.4305 30.6509 Silicon starvation,12h 31.4319 31.4319 31.4319