So I'll do my best to answer the questions I'm suited to answer:
Andy Dolman wrote:
"However, the three Therm-a-Rest NeoAir mats do not have quite similar M/L ratios - which is curious."
There is a mistake in the M/L column for the Neoairs - makes more sense when corrected.
I'll look into this and see if my head has defuzzed since the rush of proofing/publishing everything. If not, it won't be corrected until Roger can verify the numbers.
Andrew Shapira wrote:
Without reading the whole article, I'd like to know what M/L and R/T are.
The glib answer is to read the entire article, because that question is answered in the graph sections up above.
The serious answer is that the last three columns provide the data used in some of the graphs in the Comparative R-value section. M/L is Mass (listed as Weight in the graph, which doesn't help the confusion) normalized for length. R/T is the average of the Rmax/Thickness and the Rmin/Thickness.
I hope this helps, and I hope Roger returns soon! :)