Additional file 4 of Classification of long-term very long period (VLP) volcanic earthquakes at Whakaari/White Island volcano, New Zealand

Additional file 4. Peak-to-peak amplitude and cluster tree of a F1 and b F2 sub-families resulted from threshold of r = 0.85. The seven eruptions, unrest and swarm periods are denoted by reversed triangles (red), shaded areas (green) and horizontal bars (black), respectively. The colours in both top and bottom plots correspond.