This visualization shows a week of temperature measurements in San Francisco as a scatterplot, with each circle representing a temperature reading over time. The data comes from the Data Canvas - Sense Your City project and is loaded via `d3.csv`. The code uses D3 v7 APIs including `scaleTime`, `scaleLinear`, `axisBottom`, and `axisLeft` to construct the axes, while circles are rendered in SVG with a fixed radius and semi-transparent steelblue fill. Gridlines are drawn via tick marks, and the chart includes labeled axes for temperature and time.