Crow, good question, I don't think so.
The examiner stated "at least one meter" was acceptable as the amended claims currently stand.
When you read the actual patent details it states 1-2 meters but with a lot of wiggle room depending on various factors.
I don't think they give any definite correlation between stand-off, integration time, target concentrations... etc. That'd be hard to do without getting specific.
Not 100% sure though, my attention has been on the claims. I haven't read the detailed description very carefully.
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