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Hharshabandi3060@gmail.com
Last edited Dec 4, 2024
Created on Dec 4, 2024

This heatmap shows daily mean concentrations of four air pollutants (NO2, O3, SO2, and CO) over time, with color intensity indicating pollution levels. The visualization uses D3.js v6 to read a CSV file of EPA air quality data, parse dates, and render an SVG with a color scale based on the `d3.scaleSequential` with the YlGnBu interpolator. Each cell represents a pollutant-date combination, and hovering reveals a tooltip with the exact date and value. The chart employs `d3.axisTop` and `d3.axisLeft` for labeled axes.

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