Neil S found this on t'internet.
On average, Low-quality audio streaming uses 0.72MB per minute or 43.2MB per hour. Normal quality is typically 160kbps. Normal-quality music streaming uses 1.20MB per minute or 72MB per hour on average. High quality music is typically 320kbps.
Also this in a previous post.
HD quality video is between 720p and 2K (remember, the app adjusts the stream). HD-quality video uses about 0.9GB (720p), 1.5GB (1080p) and 3GB (2K) per hour. UHD quality video uses a lot of data. A 4K stream uses about 7.2GB per hour.
On average, Low-quality audio streaming uses 0.72MB per minute or 43.2MB per hour. Normal quality is typically 160kbps. Normal-quality music streaming uses 1.20MB per minute or 72MB per hour on average. High quality music is typically 320kbps.
Also this in a previous post.
HD quality video is between 720p and 2K (remember, the app adjusts the stream). HD-quality video uses about 0.9GB (720p), 1.5GB (1080p) and 3GB (2K) per hour. UHD quality video uses a lot of data. A 4K stream uses about 7.2GB per hour.