This bar chart visualizes the relationship between years since earning a PhD and salary for university professors, using a circular mark per individual record. The scatterplot employs `d3.scaleLinear` for both axes with an `axisBottom` and `axisLeft` grid, while the data is loaded from a CSV file via `d3.csv`. The visualization applies `tickFormat` with `format(".2s")` for compact salary labels and includes a rotated Y-axis title.