condition mean min max 12pM Fe,Midday 28.5063 28.5063 28.5063 12pM Fe,Midnight 22.1902 21.7326 22.6478 58pM Fe,Midday 20.6721 20.6721 20.6721 58pM Fe,Midnight 13.0831 0.0 16.9802 233pM Fe,Midnight 18.672066666666666 18.0198 19.1325 1160pM Fe,Midday 10.251312857142857 9.41037 10.9556 1160pM Fe,Midnight 10.3802075 8.13506 12.41 High carbon,Dark 14.068874 4.75586 23.0669 High carbon,Light 8.76965 0.0 21.6592 Low carbon,Dark 10.4485 10.4485 10.4485 Phloroglucinol 7.474056666666666 6.24527 8.87563 Silicon starvation,12h 22.0728 22.0728 22.0728