Figure 5 | Scientific Reports

Figure 5

From: Identification of heavy metal pollutants and their sources in farmland: an integrated approach of risk assessment and X-ray fluorescence spectrometry

Figure 5

Contributions of various sources to PER. The red horizontal reference lines represent the corresponding classification criteria of PER (150, 300, 600,1200). Boxes represent the interquartile range (i.e., 25th and 75th percentiles), the hollow squares represent the average values, and the whiskers represent the 5th and 95th percentiles.

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