This line graph shows temperature readings from three locations—Lesedi, meter, and meters—over a week in March 2015, plotted with a smooth curved line using the `curveBasis` interpolation. The visualization is built with D3 v5, using `scaleTime` for the time axis and `scaleLinear` for temperature, with axes created via `axisBottom` and `axisLeft`. Data is loaded from a CSV file containing telescope, timestamp, and value columns. The chart includes a title, axis labels, and gridlines, all rendered as SVG.