condition mean min max 12pM Fe,Midday 49.4361 49.4361 49.4361 12pM Fe,Midnight 54.22135 52.7468 55.6959 58pM Fe,Midday 43.1753 43.1753 43.1753 58pM Fe,Midnight 44.41475714285714 41.0616 57.0581 233pM Fe,Midnight 31.677500000000002 30.2805 33.6195 1160pM Fe,Midday 28.28804285714286 26.7936 29.9645 1160pM Fe,Midnight 20.467875 19.123 22.1503 High carbon,Dark 20.5063 8.73416 35.8246 High carbon,Light 11.313274615384616 1.50105 20.4684 Low carbon,Dark 16.5185 16.5185 16.5185 Phloroglucinol 17.0682 11.2312 23.3652 Silicon starvation,12h 23.5615 23.5615 23.5615