Footnote an

^anCFC-12 only, all CFC-11 flagged 3 by PI due to contamination issue; See Kieke et al. 2007; Rhein et al. 2007.

Kieke, D., M. Rhein, L. Stramma, W. M. Smethie, J. L. Bullister, and D. A. LeBel. 2007. Changes in the pool of Labrador Sea Water in the subpolar North Atlantic. Geophys. Res. Lett. 34, L06605, doi:10.1029/2006GL028959.

Rhein, M., D. Kieke and R. Steinfeldt. 2007. Ventilation of Upper Labrador Sea Water, 2003-2005. Geophys. Res. Lett., 34, L06603, doi:10.1029/2006GL028540.