condition mean min max 12pM Fe,Midday 38.6945 38.6945 38.6945 12pM Fe,Midnight 39.6289 39.017 40.2408 58pM Fe,Midday 40.7569 40.7569 40.7569 58pM Fe,Midnight 27.1769 25.0312 29.4233 233pM Fe,Midnight 24.126566666666665 23.7044 24.4744 1160pM Fe,Midday 23.211214285714284 21.7153 25.4928 1160pM Fe,Midnight 19.743 17.5486 22.5876 High carbon,Dark 18.476872666666665 7.0468 42.1129 High carbon,Light 12.06502923076923 4.09231 29.8508 Low carbon,Dark 16.8121 16.8121 16.8121 Phloroglucinol 16.148533333333333 12.1105 23.1484 Silicon starvation,12h 25.4302 25.4302 25.4302