I have no way of telling, from my stats, whether a visitor is a human, or a bot. So what is the IP, or IPs of google's bots/spiders? What is it's city/country of origin? What proportion of my website does it crawl? How much time does it spend on each page? Are the times equal for each page? Thanks in advance.
You can get lots of stats about the googlebot if you register wour site within the google webmasters tools. Give you info about popular search result keywords, indexed pages and will warn you of any problems like pages not found etc.
I have heard that if you try to get too close to the Googlebot you may get penalised. Any attempt to analyse or manipulate it could be fatal for the site. Most basic stats packages provide information about bots and spiders. If yours does not install another one. My advice, be sure that your intensions are honourable.
Check awstats, you'll get details of all type of visitors - human, from search engines, bots, robots, aliens all
awstats is probably one of the best opensource stat software that can detect bots and name which ones are visiting your site, time they've been crawling and pages crawled.. another really good stat software is webtrends but unfortunately it's not opensource. so u'd have to roll out the dough there..
I agree with the last two suggestions. If your stat reporting software doesn't distinguish between real visitors and bots, then you need to get some different stat software. All of the stat programs I use distinguish and will even filter bots out of the statistics. A good free one to use is www.statcounter.com.
Also make sure you have reverse DNS resolution turned on in your stats else you won't see the name of the host. Google sometimes does not use the user agent when spidering sites.