condition mean min max 12pM Fe 32.130575 29.874950000000002 34.3862 58pM Fe 48.7051 38.3458 59.0644 233pM Fe 34.6431 34.6431 34.6431 1160pM Fe 36.96910714285714 30.686714285714285 43.2515 Dark 45.79981033333333 37.254120666666665 54.3455 Light 23.90757076923077 23.90757076923077 23.90757076923077 Phloroglucinol 35.8074 35.8074 35.8074