What does the upper crt display in eicas system?

In an Engine Indication and Crew Alerting System (EICAS), the upper CRT (Cathode Ray Tube) display typically shows critical engine and system parameters, such as engine performance data (e.g., N1, N2, EGT), fuel flow, and hydraulic pressure. It may also include warnings or alerts related to engine status and system malfunctions. This information is essential for pilots to monitor the aircraft's performance and ensure safe operation.