Smart HUD - How Are Smart HUD stats calculated?

VPIP (Voluntarily Put Money In the Pot) - number of times you voluntarily put money in the preflop pot / total number of hands) x 100
PFR (Pre Flop Raise) - (Number of preflop raises / total number of hands) x 100
ATS (Attempt to Steal)(Number of times a player has attempted to steal the blinds from that position / The number of times a player can attempt to steal the blinds from that position) x 100
3BET (Raise 3-Bet) - Number of times player 3bet preflop / number of times player could 3bet preflop x 100