This dataset is a collection of a series of voyages under taken between 7 December 2009 and 18 June 2010, in two groups, one at the beginning and other at the end of the time period. Data for 47 deployments were acquired using the Seabird SBE19 Plus SEACAT Profiler, fitted with ten litre Niskin bottles on a rosette sampler. Of the 47 deployments, seven deployments could not be processed to the final averaged, QC'd data stage.