Supplement to: Coffinet, Sarah; Meador, Travis B; Mühlena, Lukas; Becker, Kevin W; Schröder, Jan Martin; Zhu, Qing-Zeng; Lipp, Julius S; Heuer, Verena B; Crump, Matthew P; Hinrichs, Kai-Uwe (2019): Structural elucidation and environmental distributions of butanetriol and pentanetriol dialkyl glycerol tetraethers (BDGTs and PDGTs). Biogeosciences, 17, 317-330, https://doi.org/10.5194/bg-17-317-2020