ClickFlow accepts following Log Formats.

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(1) Combined Log Format
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	LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-agent}i\"" combined
	CustomLog log/acces_log combined

127.0.0.1 - - [01/Jun/2000:00:00:00 +0900] "GET / HTTP/1.0" 200 - "http://external.site/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"
127.0.0.1 - - [01/Jun/2000:00:00:00 +0900] "GET /1hop/ HTTP/1.0" 200 - "http://www.c-egg.com/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"
127.0.0.1 - - [01/Jun/2000:00:00:00 +0900] "GET /2hop/ HTTP/1.0" 200 - "http://www.c-egg.com/1hop/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"
127.0.0.1 - - [01/Jun/2000:00:00:00 +0900] "GET /3hop/ HTTP/1.0" 200 - "http://www.c-egg.com/2hop/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"

127.0.0.1 (%h)
	This is the IP address of the client (remote host) which made the request to the server.
	DO NOT USE HostnameLookups.

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REFERENCE
	Apache HTTPD Server Documents / LogFiles
	http://httpd.apache.org/docs/logs.html