condition mean min max 12pM Fe,Midday 2.11167 2.11167 2.11167 12pM Fe,Midnight 1.99819 1.83004 2.16634 58pM Fe,Midday 1.24567 1.24567 1.24567 58pM Fe,Midnight 2.2201271428571427 0.0 4.35222 233pM Fe,Midnight 2.4951233333333334 1.52719 3.50689 1160pM Fe,Midday 1.1490752857142859 0.463737 2.43346 1160pM Fe,Midnight 4.608886666666667 1.58788 9.22219 High carbon,Dark 4.968667333333333 1.11562 14.8578 High carbon,Light 7.09396 0.0 21.5055 Low carbon,Dark 2.28759 2.28759 2.28759 Phloroglucinol 6.1447666666666665 5.78517 6.47407 Silicon starvation,12h 1.60197 1.60197 1.60197