I'm just being a little picky & irritable. Sorry. Part of the problem is we're not all speaking the same language or using the same standards. 3-sigma = 1 chance in 400. How many ways can we creat to say 1 chance in 400.
There is a plethora of contradictory scientific test results on the "market" today. Reminds me of lawyers being able to read anything they want into or out of something. Getting close to babble.