condition mean min max 12pM Fe,Midday 39.5798 39.5798 39.5798 12pM Fe,Midnight 35.31365 34.9198 35.7075 58pM Fe,Midday 27.2296 27.2296 27.2296 58pM Fe,Midnight 31.8012 22.4085 70.3503 233pM Fe,Midnight 15.0309 14.5981 15.344 1160pM Fe,Midday 21.254585714285714 18.7095 23.0351 1160pM Fe,Midnight 11.292478333333333 8.6469 15.7051 High carbon,Dark 16.445582 2.3011 27.2044 High carbon,Light 12.05493923076923 2.0971 25.5192 Low carbon,Dark 12.7023 12.7023 12.7023 Phloroglucinol 60.394 43.713 74.2231 Silicon starvation,12h 27.5303 27.5303 27.5303