A scatterplot displays temperature readings in degrees Celsius over time for Buenos Aires, using hourly data from April 2011. Each circle represents a recorded temperature point, with the x-axis showing dates and the y-axis showing temperature values. The visualization uses D3 v5's `scaleTime` and `scaleLinear` for axes, with points rendered as SVG circles. The chart includes grid lines, axis labels, and a title, with data parsed from a CSV file containing meteorological measurements.