Bryan Johnson· Author
And so if you're exposed to PM 2.5 on an annual basis, so let's say that you have a a an extra extra 15 points on the PM 2.5 scale for 20 hour 24 hours a day at 365 days a year. you're getting um exposure of 131,000 uh per year versus on a July 4th spike. It's about uh less than 1% of that.