This interactive D3.js v7 visualization displays a heatmap-style pricing table for DPC website names, comparing new price values against change percentages across time periods. The visualization includes a dropdown menu allowing users to filter data by assessment frequency (Daily, Weekly, BiWeekly, or Monthly), dynamically updating the table to show the 12 most recent time columns. The code utilizes D3's `csv` for data loading, `group` for data aggregation, and custom menu functionality with `dispatch` events. Data is filtered and sorted in descending chronological order, with color-coded cells indicating price changes.