condition mean min max 12pM Fe,Midday 23.8504 23.8504 23.8504 12pM Fe,Midnight 28.95015 26.2911 31.6092 58pM Fe,Midday 17.232 17.232 17.232 58pM Fe,Midnight 19.199442857142856 0.0 25.3705 233pM Fe,Midnight 14.5153 13.5808 15.7654 1160pM Fe,Midday 12.326371428571429 10.5084 14.0341 1160pM Fe,Midnight 26.095441666666666 9.5195 42.5008 High carbon,Dark 14.671838666666666 4.48268 28.9582 High carbon,Light 8.302679923076923 0.0 16.8022 Low carbon,Dark 7.5096 7.5096 7.5096 Phloroglucinol 18.15523333333333 14.1282 22.2141 Silicon starvation,12h 18.9741 18.9741 18.9741