I'm a little late to the party, but I did a similar study on ridesharing's influence on DWI rates in Austin, TX before and after Uber and Lyft arrived and then exited the city, you can read it here: http://rpubs.com/ianwells/247645
New Horizons is using a 1/6 rate Turbo code for forward error correction, meaning 5/6 of the data returned is redundant. Previous discussion: https://news.ycombinator.com/item?id=9890476