Supplement to: Burton, Kevin W; Gannoun, Abdelmouhcine; Parkinson, Ian J (2010): Climate driven glacial-interglacial variations in the osmium isotope composition of seawater recorded by planktic foraminifera. Earth and Planetary Science Letters, 295(1-2), 58-68, https://doi.org/10.1016/j.epsl.2010.03.026