I am swe 3 at google, one below senior, base 140k (supposedly maxed, but I've heard other swe 3 making somewhat more), total comp excluding benefits 230k.
As for verification, I'll bet you lots of money at 10:1 odds that these are accurate within 10k (flux depends on stock price).
Glassdoor also suffers from the same problem. It's voluntary, unverifiable data. Using it as a source does not help your credibility.