...
The download activity since January 2013 is graphed below. Except for 5.6 Terabyte spike in June 2013, downloads average less than 0.5 TBytes/month.
NLST-Series-Downloads-by-Month.xlsx
Hard-Drive Requests
Filling hard-drive requests eliminate the need for a investigator to wait for lengthy download. These requests are more sporadic than monthly downloads. For example, in June, 2014, we provided 1.5 TBytes of images (images from 3,200 subjects) on hard drives but none other in 2014.
...