I couldn't understand the meaning of cs-bytes, cs-stream-bytes , sc-bytes, sc-stream-bytes.

I have tried to setup some local logging dashboard to analyze the Wowza connection request. But when I tried to plot cs-bytes, it show nearly 6GB [ bytes] for each request. Can someone give detail info about these option.?.

I cross verified the documentation. it just mention, client to Server connection with Cumulative data. but this doesn't give me a clear info about these option.