condition mean min max 12pM Fe,Midday 18.1501 18.1501 18.1501 12pM Fe,Midnight 21.528550000000003 20.1338 22.9233 58pM Fe,Midday 15.7389 15.7389 15.7389 58pM Fe,Midnight 16.209142857142858 14.338 17.7409 233pM Fe,Midnight 15.451833333333333 15.1967 15.7572 1160pM Fe,Midday 9.847532857142857 8.58287 11.1605 1160pM Fe,Midnight 12.316241666666667 10.0522 14.9718 High carbon,Dark 11.232796 6.2772 17.4926 High carbon,Light 8.28443 1.07501 15.1089 Low carbon,Dark 8.91352 8.91352 8.91352 Phloroglucinol 10.331583333333333 8.6444 13.3275 Silicon starvation,12h 15.9951 15.9951 15.9951