'web_log.squid_response_codes': {
        info: 'Web server responses by code family. ' +
            'According to HTTP standards <code>1xx</code> are informational responses, ' +
            '<code>2xx</code> are successful responses, ' +
            '<code>3xx</code> are redirects (although they include <b>304</b> which is used as "<b>not modified</b>"), ' +