This radial plot displays monthly temperature anomalies for Massachusetts, measured as deviations from a baseline, for a selected year. Each point represents one month, positioned by its date along a circular time axis and by its anomaly value from the center, with a color scale ranging from blue (negative anomaly) to red (positive anomaly). The tooltip and slider menu allow year selection. The visualization is built with D3 v7 using `scaleTime` for the angular axis, `scaleLinear` for the radial axis, `lineRadial` to connect the data points, and `interpolateRdBu` for the color mapping, all rendered as SVG within React.