Data Visualization Specification

Write a data visualization specification for displaying the following data: [DATA_DESCRIPTION]. The visualization is for: [AUDIENCE — e.g., executive dashboard / customer-facing report / internal analyst]. The key insight the visualization must communicate: [KEY_INSIGHT]. For each visualization recommended: (1) Chart type and rationale — name the chart type and explain in one sentence why it's the right choice for this data and message, (2) Data mapping — specify exactly which data field maps to X axis, Y axis, color, size, and tooltip, (3) Title and labels — provide the exact chart title (state the insight, not the topic), axis labels, and legend labels, (4) Formatting — number formatting, date formatting, color palette (use [BRAND_COLORS] or suggest neutral accessible colors), (5) Annotations — any reference lines, callout labels, or highlighted regions and what they show, (6) Interactivity — if applicable, what hover states, filters, or drill-downs are needed, (7) Accessibility — alt text for the chart and any colorblind-safe considerations. Recommend [NUMBER_OF_VIZZES — e.g., 2–3] visualizations that work together to tell the complete story.