Which sky cover category is indicated by the code 'BKN'?

The code 'BKN' stands for "Broken" when describing sky cover in aviation weather reports. In this context, "broken" refers to cloud coverage that occupies between 5/8 and 7/8 of the sky, indicating that there are significant portions of the sky covered by clouds, but also some gaps or breaks where the sky is visible. This level of coverage can have implications for flight operations, as visibility and weather conditions can vary significantly based on the extent of cloud cover. Understanding sky cover codes like 'BKN' is crucial for pilots and air traffic controllers as they assess weather conditions for flight planning and safety.