In the history of bitcoin, the 200ma on the weekly has been a good place to buy before a great rally upwards. This time, buyers of the 200ma weekly were in loss to about 30.5%. Shorters of the 200ma weekly got a 2R trade. Price is now at their entry again. This is tracking the long entries that have been waiting for a significant rise since the drop.
R is risk. The number in front is the multiple of that risk. Risk is calculated by how much price goes in the opposite direction of your bias after your entry, before finally going in your favor. This is the concept of actual risk.