This window is useful for real-time debugging for one station. Select a station to monitor by entering the MAC address. The four charts are then populated with data for that station and the log entries for that station appear at the bottom of the page. You can also click Error Log to see a list of errors for this station.
Throughput is defined as the sum of the transmitted and received bits-per-second for that radio measured over the last two minutes.
Loss is defined as the percentage of 802.11 unicast packets transmitted for which no 802.11 ack is received.
Signal Strength shows the signal for this station in chart form - any shade of green is good signal strength.
Airtime Utilization is the percentage of air time consumed by this station.
Station Diagnostics lists events that you can change by clicking Events... and then altering the list.