condition mean min max 12pM Fe,Midday 86.6869 86.6869 86.6869 12pM Fe,Midnight 198.1465 193.79 202.503 58pM Fe,Midday 57.2422 57.2422 57.2422 58pM Fe,Midnight 157.41685714285714 0.0 220.552 233pM Fe,Midnight 146.95666666666668 141.814 151.185 1160pM Fe,Midday 25.1128 18.7208 28.9974 1160pM Fe,Midnight 92.906175 67.8409 107.275 High carbon,Dark 115.94045333333334 21.5318 177.604 High carbon,Light 44.9002 12.9489 89.5473 Low carbon,Dark 159.785 159.785 159.785 Phloroglucinol 87.86973333333333 66.0761 118.199 Silicon starvation,12h 39.7522 39.7522 39.7522