How to select a power for a scale-free topology network
I would be concerned about the input data that produced these numbers. This dataset has a really odd shape with a dip at the start:

data.df &lt;- read.table("soft_threshold.txt", header=TRUE);
png("scale-free-194.png");
plot(data.df$SFT.R.sq);
dummy &lt;- dev.off();




Here's what I expect this to look like (from the supplementary information in this paper):



It's easier to select the power/threshold when the plot looks like the second situation. With the data as presented, it doesn't look like any value would be suitable. but if I were forced to pick, then I'd choose 12 because it is the first number above the magic threshold (ignoring the weirdness at the start). However, I'll admit that I don't understand the concepts behind the power, and am just following the recommended instructions, so can't explain why it is what it is.