condition mean min max 12pM Fe,Midday 7.52938 7.52938 7.52938 12pM Fe,Midnight 17.17745 16.571 17.7839 58pM Fe,Midday 10.8457 10.8457 10.8457 58pM Fe,Midnight 13.542128571428572 0.0 17.8823 233pM Fe,Midnight 18.6425 17.2959 21.2644 1160pM Fe,Midday 6.609557142857143 5.25947 9.55526 1160pM Fe,Midnight 14.975033333333334 12.1066 21.462 High carbon,Dark 16.300464 9.43586 21.3761 High carbon,Light 11.511279230769231 1.18595 22.8848 Low carbon,Dark 17.0721 17.0721 17.0721 Phloroglucinol 10.837299999999999 7.6385 15.9858 Silicon starvation,12h 27.5968 27.5968 27.5968