As an example, consider Figure 3. This figure shows CDFs of FIN-pair local round trip times.
Solid lines represent Gig-Backbone data, and each of the rest represents a specific host network technology type.
Since the graph is logarithmic on the horizontal axis, roughly 95% of all LRTTs are 1*10-3 seconds or less.
In fact, most Ethernet traffic in general falls before 1*10-3s and is clearly distinct from wireless traffic.