In the R code and associated inputs used to match latitude/longitude coordinates stored in RDS format to the PM2.5 data in RDS format, and convert to GeoTIFF:

• Specifically in the file named "RDS to GeoTIFF_conversion.R":

• Line 56: What was the reason the authors chose 1/8 for the weighted average for the moving window (3 x 3 window)? The convention is 1/9 for the (n=9 gridded cell window)