This is a bash oneliner to show Apache web connections per hour.
# cat /var/log/apache2/access_log_pario.no | grep "21/Jan/2008:.." | awk {' print $4":"$1 '} | sed 's/\[//g' | awk -F : {' print $1":"$2"\t\t"$5 '} | sort | uniq -c
returns:
37 21/Jan/2008:00 192.168.0.10
NOTE: This shows that it had 37 hits from 00:00 – 01:00 in 20th February 2008.