graph TD A[Start: Receive TrafficSummary.csv] -->|CSV Data| B[Parse CSV Content] B -->|Parsed Data| C[Extract Key Metrics] B -->|Parsed Data| D[Analyze Performance vs Goals] C --> E[Calculate Daily Averages] C --> F[Determine Geographic Performance] C --> G[Compute Overall Conversion Rate] E -->|Metrics| H[Generate Text Summary] F -->|Geographic Data| H G -->|Conversion Data| H D -->|Goal Analysis| H H -->|Summary Text| I[Create PerformanceInsights.txt] B -->|Optional| J[Prepare Data for Visualization] J --> K[Generate Performance Graph] K -->|Chart Image| L[Save PerformanceGraph.jpg] I --> M[Final Output Package] L -->|Optional| M M --> N[End: Deliver Performance Files] style A fill:#f9f,stroke:#333,stroke-width:2px style N fill:#f9f,stroke:#333,stroke-width:2px style H fill:#bbf,stroke:#333,stroke-width:2px style K fill:#bbf,stroke:#333,stroke-width:2px