This visualization displays a week of temperature readings in Rio de Janeiro as a time-series line chart. The data is loaded from a CSV file via `d3.csv`, with timestamps parsed as dates and temperatures converted to numbers. The chart uses D3 v5 scales (`d3.scaleTime`, `d3.scaleLinear`) and axes (`d3.axisBottom`, `d3.axisLeft`) to render the plot, with orange circles marking each hourly observation. The visualization is rendered as an SVG, with a styled grid and labeled axes.