The difference between a bus and an earthquake
As you can see in the first three lines of our data the signal is different from an earthquake. We suggest that one bus was following another (blue highlight) and we can tell that this is not an earthquake because it doesn't register on all the stations. The red highlight is a small earthquake, you can tell this when looking at data because it shows up on all the other stations.
The bus schedule
In this data you are able to see when buses and cars drive by (blue highlight), when the heavy equipment goes by (red highlight), and when there is little to no noise going by our seismometers (yellow highlight).