The data shown here comes from Flight Delay Analysis Dataset
This chart meant to show the "Average Delay Time and Delay Reason for various airline carriers". The color denotes the delay reason. The Delay Reason and the Avg Delay Time for each airline are shown on the tooltip as well when you hover over it.
The questions that can be asked from this chart are:
Overall my experience with this visualization was insightful. It was able to answer the questions/tasks well and it was easy for me to derive insights from this graph.