The parallel coordinates chart represent the z-score, or standard score (how far the annual consumption of an ingredient diverged from its average consumption over the 48-year period represented in the chart).
The table under the parallel coordinates chart contains the color key, categories, units of measure used, the minimum and maximum consumption, the mean, and the tabular raw consumption values. Scrolling over particular ingredients in the table mutes all other lines on the chart. Likewise, brushing a particular region on the an x-axis on the chart hides all other ingredients in the table.
At the bottom are two pop-up facets: a timeline of when the elector was present in Königsberg and a filter to isolate one or more food category in the chart. Click on “Category” to remove a food group and “Select all categories” to reset the chart.
See the bar chart to view the consumption data by food categories.