Abstract
Computer trend-surface mapping techniques in conjunction with a statistical evaluation of suspended paniculate data from Houston, Texas, 1968 and 1969, are presented as a basic method for evaluation of progress toward a clean air environment. This assessment is accomplished via; 1. (a) comparison of current levels of pollution to those previously experienced, 2. (b) a determination of the changes in levels of pollution experienced throughout representative parts of the geographic area under consideration, and 3. (c) a comparison of current pollution levels in terms of occurrence with those of stated desirable levels, e.g., ambient air quality goals.
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