condition mean min max 12pM Fe,Midday 33.512 33.512 33.512 12pM Fe,Midnight 45.8586 40.2974 51.4198 58pM Fe,Midday 20.1738 20.1738 20.1738 58pM Fe,Midnight 40.874585714285715 26.5221 97.6481 233pM Fe,Midnight 19.971033333333335 18.6102 20.6992 1160pM Fe,Midday 18.989685714285713 16.5014 21.5355 1160pM Fe,Midnight 18.78305 13.882 23.6987 High carbon,Dark 21.605690666666668 9.14264 34.552 High carbon,Light 15.36067846153846 6.40385 32.2925 Low carbon,Dark 18.7471 18.7471 18.7471 Phloroglucinol 12.106833333333332 10.7671 13.8488 Silicon starvation,12h 15.0038 15.0038 15.0038