What information does a CIRO screen provide?

The correct choice highlights that a CIRO screen provides operational parameters for a refrigeration unit. This information typically includes key metrics such as pressure, temperature, flow rates, and system performance indicators which are crucial for monitoring and controlling the refrigeration process effectively.

By understanding the operational parameters, an operator can make informed decisions regarding the system's efficiency, diagnose potential issues, and ensure that the refrigeration unit is running within its designed specifications. These parameters are essential for maintaining optimal performance and preventing failures that could lead to costly downtimes or safety hazards.

While other options like safety levels, refrigerant details, and maintenance history are important facets of overall system management, they do not directly represent the real-time operational data that is crucial for daily operations and immediate troubleshooting in the context of a CIRO screen.