condition mean min max 12pM Fe,Midday 25.6045 25.6045 25.6045 12pM Fe,Midnight 26.16945 24.7449 27.594 58pM Fe,Midday 20.1388 20.1388 20.1388 58pM Fe,Midnight 17.5227 0.0 22.0171 233pM Fe,Midnight 20.883333333333333 20.3063 21.261 1160pM Fe,Midday 18.99582857142857 17.2764 19.969 1160pM Fe,Midnight 13.097516666666667 11.0607 15.9266 High carbon,Dark 27.036206666666665 12.5024 37.0198 High carbon,Light 23.617707692307693 16.1449 31.1993 Low carbon,Dark 27.7376 27.7376 27.7376 Phloroglucinol 43.1964 28.8599 59.6457 Silicon starvation,12h 34.3603 34.3603 34.3603