This object sets the sampling window, in seconds, over which the device measures bit rate when the Top-N table is configured to rank by a bitrate-based statistic; changing it has no effect if ranking by byte or packet counts instead. Because modifying this value immediately restarts a fresh sample period, an admin adjusting it mid-monitoring should expect a brief gap before fresh, accurate Top-N results are available again. Setting this to 60 would have the device average bit rate over rolling 60-second windows rather than, say, a noisier 5-second sample that could be skewed by a brief traffic burst.