Sorry, can't pull numbers retroactively, but I can tell you that brightness is at its default setting (auto), I WAS on LTE during the day (this photo was taken at home after work), and the display was active, as general as this sounds, more than it would be in a typical day's use, as I had several, "wow, so that's the Nexus 5, huh?" types of encounters yesterday, so I was constantly waking it up to show people things.
Typical use for me is Hangouts when not at my desk, a few short (~5 minute) phone calls, a YouTube video or two, and news reading on Flynn a few times throughout the day. I don't play games on my phone, so this is not a good representative test for people that expect 20 hours straight battery life playing Asphalt 8. This IS, however, a good "average day at the office" type of test, which I wager is a majority of cell phone users who may have been scared away from the reviews regarding battery life.