$remote_addr - $remote_user [$time_local] "$request" $status $body_bytes_sent "$http_referer" "$http_user_agent"

Explanation of fields is as follows:

• $remote_addr – IP from which request was made
• $remote_user – HTTP Authenticated User. This will be blank for most apps as modern apps do not use HTTP-based authentication.
• [$time_local] – timestamp as per server timezone
• "$request" – HTTP request type GET, POST, etc + requested path without args + HTTP protocol version
• $status – HTTP response code from server
• $body_bytes_sent – size of server response in bytes
• "$http_referer" – Referral URL (if present)
• "$http_user_agent" – User agent as seen by server