condition mean min max 12pM Fe,Midday 39.2515 39.2515 39.2515 12pM Fe,Midnight 37.147949999999994 35.9499 38.346 58pM Fe,Midday 27.931 27.931 27.931 58pM Fe,Midnight 26.993257142857143 24.3901 32.5253 233pM Fe,Midnight 27.012166666666666 25.5484 28.5472 1160pM Fe,Midday 23.975414285714287 22.2826 30.1395 1160pM Fe,Midnight 20.48645833333333 17.0113 25.4059 High carbon,Dark 20.960012666666668 8.78672 46.1993 High carbon,Light 14.82788 4.08997 38.1026 Low carbon,Dark 23.9369 23.9369 23.9369 Phloroglucinol 43.63386666666666 27.3608 61.4008 Silicon starvation,12h 37.8461 37.8461 37.8461