This value reports the weakest received signal strength, in dBm, recorded among stations associated to a specific AP radio during the statistics interval. Admins check it to identify the worst-served client on a radio, which often points to a station at the edge of coverage that may be causing retransmissions or drops. For example, a minimum of -88 dBm flags a client barely holding a connection, prompting the admin to look into that station's placement.