This counter tracks the total number of bytes this device has transmitted to a specific connected station. An admin monitoring mesh traffic patterns uses this to see which stations are receiving the most downstream data from this node, complementing the upstream view given by ciscoUrwbStaRxBytes. If ciscoUrwbStaTxBytes for a particular station grows far faster than for others, the admin might check what downstream application, such as video feeds, is being delivered heavily to that specific device.