Full-resolution .tif files of the 86 incoherently summed radargrams analyzed in Whitten and Campbell (2018). Each radargram has been individually stretched to increase the contrast in each image and an ice depth correction has been applied, assuming a dielectric permittivity of 3.15. This value is applied across the SPLD, regardless whether CO2 ice is present. Applying 3.15 to CO2 areas does not drastically change the position of subsurface reflectors and is thus applied across the SPLD.