This example shows employee time-series data as a line chart with overlaid scatterplot circles, tracking a single numeric value across 60 time steps. The visualization uses d3.csv to load the data, then applies d3.scale.linear for both axes and d3.svg.line to generate the path. d3.svg.axis renders the bottom and left axes, while circles are appended with SVG attributes for each data point. The chart is drawn in an SVG canvas with a steelblue stroke, and the y-axis domain starts at zero, making the initial values appear relatively flat before rising after time step 40.