not sure which game you're talking about, but here are my stats for comparison. i feel like i border on a RAg (rock aggressive) at limit (vp$ip = 14.91), and am a solid TAg at the no limit full table ring game (vp$ip = 18.21).

no limit

preflop --.59
flop ------6.67
turn -----3.20
river ----2.60
overall --1.34

limit

preflop --.64
flop ------2.23
turn -----2.33
river ----2.48
overall --1.35

if your stats are for no limit, they mirror mine, which i would explain as playing aggressively when you've flopped something, or are trying to semibluff.

if your stats are for limit, is it that you're initially playing really aggressively, and then slowing down on the river?