This is very important as it has been noticed that conversion rate is affected by the hour of day. With the help of hourly tracking, you can find what hours of the day are profitable. You can select a wide range of date to confirm the profitable or loss hours and activate or pause your campaign during those hours. The green rows represents profitable hours whereas blue ones represents unprofitable hours. You can view SID and keyword tracking for each hour. Just click on SID tracking link for any hour and it will show you the traffic source SIDs for that particular hour. Then you can view the keywords for that hour for a particular SID by clicking on 'Keyword Tracking' link.