VP$IP / PRF

Voluntary Put $ In Pot. A percentage of how often they play hands outside of the blinds, in this case he would be playing 23.4%.
Pre-flop Raise, how often they raise or re-raise a hand preflop, in this case 8.1%.

In order to get these to display, you need Poker Tracker with a HUD program, the most popular being Poker Ace HUD. It will display these and many other stats next to the players names at the table which can help give you an idea of how to play against them. Extremely helpful for multi-tabling, however they will never replace reads.