HTTP Reports clearly list the number of timeouts and errors in your network.
Response Code
200 (OK)
201 (Created)
202 (Accepted)
204 (No Content)
301 (Moved Permanently)
302 (Found)
307 (Temporary Redirected)
400 (Bad Request)
401 (Unauthorized)
403 (Forbidden)
404 (Not Found)
405 (Method Not Allowed)
500 (Internal Server Error)
501 (Not Implemented)