condition mean min max 12pM Fe,Midday 5.39563 5.39563 5.39563 12pM Fe,Midnight 6.19063 6.02516 6.3561 58pM Fe,Midday 5.53481 5.53481 5.53481 58pM Fe,Midnight 6.153561428571429 0.0 7.89757 233pM Fe,Midnight 2.7853466666666664 2.63033 2.90074 1160pM Fe,Midday 3.1864271428571427 2.53116 3.52329 1160pM Fe,Midnight 1.8277925 1.47781 2.19021 High carbon,Dark 6.6062452 0.908148 14.6722 High carbon,Light 3.3536723076923076 1.0682 9.22879 Low carbon,Dark 6.05204 6.05204 6.05204 Phloroglucinol 1.53209 1.14714 1.85509 Silicon starvation,12h 3.42313 3.42313 3.42313