Info of PWR value of airodump-ng

Hello everyone, I use airodump-ng for the monitoring of wifi network.
I need the PWR value of the station; I read in the airodump-ng page http://www.aircrack-ng.org/doku.php?id=airodump-ng#airodump-ng_keeps_switching_between_wep_and_wpa, but I have som...