This is the result of exiting firebug. Each time you request a page, it displays a timeline for each page component. You can disable the browser cache if you wish.
onload: on the last line is what you are looking for.
The time from the beginning of the first request to the end of the last request is 1.11 seconds.
The time from the start of the first request until the load event is fired on the page is 1.12 seconds.
The last two entries relate to the Google Analytics tag.
Firebug Net Panel Timings is very well explained here.
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