I'm not saying you're wrong, but remember 1600 ppm is only 0.16%, so that's impressive sensitivity. 4x atmospheric. We've been discussing 1% to 3%, which is 10

I'm not saying you're wrong, but remember 1600 ppm is only 0.16%, so that's impressive sensitivity. 4x atmospheric. We've been discussing 1% to 3%, which is 10,000 to 30,000ppm.