Seismograms are shown latest first. All seismograms are ©IRIS/USGS
These run from 01 April (2012.92) to 30 April (2012.121)
You can see the individual image by right clicking and showing in a new tab (Firefox) or when in the gallery view right click ‘Permalink’ and open in a new tab/window. Clicking an image starts the gallery. Clicking an image while in the gallery moves to the next image.