condition mean min max 12pM Fe,Midday 41.1122 41.1122 41.1122 12pM Fe,Midnight 32.4107 31.9237 32.8977 58pM Fe,Midday 30.315 30.315 30.315 58pM Fe,Midnight 16.262314285714286 0.0 23.4099 233pM Fe,Midnight 17.596566666666668 17.2396 18.1352 1160pM Fe,Midday 26.160285714285713 23.113 28.2157 1160pM Fe,Midnight 11.506591666666667 9.7787 13.8024 High carbon,Dark 16.290437333333333 5.20679 25.0983 High carbon,Light 16.74514 4.35659 32.9235 Low carbon,Dark 11.1343 11.1343 11.1343 Phloroglucinol 32.57426666666667 29.5036 35.0362 Silicon starvation,12h 41.0132 41.0132 41.0132