Currently there are only four settings and all but the first are optional, edit the top of the plugin to see them
log location
$browsertimer['log']='/browsertimer/browsertimer.log';
That is where the log is kept. Obviously the directory must be chmod 777 on your server. For that reason I STRONGLY recommend you put it ABOVE the web root.
The default setting will keep it safely above the web root:
$browsertimer['log']=dirname($_SERVER['DOCUMENT_ROOT']).'/browsertimer/browsertimer.log';
but since it may confuse people, adjust it as you will.
Further explaination: ie.
/home/username/public_html/
is the webroot on many servers but not all by any means you could in theory make
/home/username/browsertimer/
and chmod 777 that directory, and it will work with the default setting.
filter out bad times
$browsertimer['filter']=true;
This setting just throws away entries longer than 20 seconds or less than 100ms which are typically bogus. For example Google has a nasty habit now of parsing javascript no matter how obfuscated it may be to extract URLs, and sure enough it will follow the browser timer, giving you really high, weird numbers.
control which pages are timed (or all as default)
$browsertimer['pages']=false;
This allows you to control what pages are timed. I'd leave it alone for now but someone may have specific interest in mind.
enable geo-location to find and record visitors country
$browsertimer['geoip']=false;
This is where the geo-location magic happens, it's optional, and will tell you what country the visitor is in with about 90% accuracy.
false means country lookup off
or set it to $browsertimer['geoip']='ip2c';
and download this program called IP2C http://admin.firestats.cc/ccount/click.php?id=74 extract these two files and put them in the same directory:
ip2c.php
ip-to-country.bin
(note ip-to-country.bin is large, it's one big database)