. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. ATMOSPHERIC DEPOSITION TRENDS IN ILLINOIS. 19 18 78 11 99 47 55 53 SITE ID Figure 7. Distributions of total inorganic ion concentrations (Total Ion Strength) in Illinois precipitation at NADP/NTN sites (see figure 1 for site locations). Boxes enclose the 25th to the 75th percentiles and the notches mark the median and its 95 percent confidence interval. Box widths are proportional to the square root
. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. ATMOSPHERIC DEPOSITION TRENDS IN ILLINOIS. 19 18 78 11 99 47 55 53 SITE ID Figure 7. Distributions of total inorganic ion concentrations (Total Ion Strength) in Illinois precipitation at NADP/NTN sites (see figure 1 for site locations). Boxes enclose the 25th to the 75th percentiles and the notches mark the median and its 95 percent confidence interval. Box widths are proportional to the square root of the number of observations. Lines (whiskers) extend to the minimum and maximum except where indicated. Horizontal ticks on the whiskers indicate the 10th and 90th percentiles. For comparison, the shaded band marks the location of the notch for ILll. 169. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Dept. of Energy and Natural Resources; Critical Trends Assessment Project. Springfield, Ill. : Ill. Dept. of Energy and Natural Resources
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