Change x-axis from bins to t2 in ms and recalculate R2

Today, I changed x-axis from bins to t2 in ms and recalculated R2.

Summary:
After ignoring the first several or last several points with large residuals, I improved most of the low R2 depths.

There are only 11 depths with R2 lower than 0.7 and 3 depths with R2 lower than 0.4. The lowest is 0.293 (the middle one of the second figure). I think the reason is not only for the first or last peaks but also for the bad fitting results in middle parts, which is unavoidable for this fitting functions if I need the accuracy for other depths.

The following is the new R2 distributions for all used 3055 depths.

Tomorrow, I will do depth matching for logging data and parameters data and start applying them in R.