Issue about the range of the site

[wumingyouli]

Dear Krishna:
Through reading NFMD's guide(http://www.wfas.net/nfmd/user_guide/user_guide.pdf), I found that “The sampling site or plot should be about 5 acres in size”，and in your code "download_sentinel.py” , pad=0.05, which means that the site area is 50m * 50m?How to consider the site range error when downloading remote sensing reflectivity data through latitude and longitude?
Looking forward to your reply
ming