This data set was acquired with a Sippican MK21 XBT Expendable Probe during Nathaniel B. Palmer expedition NBP0506 conducted in 2005 (Chief Scientist: Dr. Miles McPhee). These data files are of Sippican MK21 Export Data File format and include Sound Velocity and Temperature data that have not been processed. Data were acquired as part of the project(s): Maud rise Non-linear Equation of State Study, and funding was provided by NSF grant(s): ANT03-37159.