Figure S4. Sea-surface height in cm from Aviso
(http://www.aviso.oceanobs.com) on the day of sampling for PE17-24
(large black triangle), June 26, 2017. The small black triangle
indicates the position of the former Deepwater Horizon oil rig. This
image was produced by NOAA/AOML
(https://www.aoml.noaa.gov/phod/dhos/altimetry.php).