V
At that point, he checked on his status bars: HP&MP full, TP down by 40%, SP by 20%. He last drank water at 9:15, while now it was 11:15. So, TP decreases at a pace of 10% per 30 min (and SP at half that pace). While thinking that this pace was lax compared to other survival games he's played, Kirito theorised that the pace depended on activity and environment.