Tonga Earthquake Day 123 2006
These plots show 6 stations, 3 from the PBO array and 3 from the Taiwan array. Arrival times are very similar, and this is because the distance from Tonga to the US and Tonga to Taiwan are very similar, around 5500miles.
Here you can see definite distinction between the arrivals of different signals.
The total length of the event was well over 2 hours.
Local Taiwan Earthquake 2006 Day 209 Hour 7
This plot is of interest because it shows the very first signals as the earthquake arrives. Here there are two stations, both collecting data at 100Hz.