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Globally averaged precipitation offsets of groundwater (groundwater as labeled in the figure), stream water (stream), soil water (soil), and xylem water with (xylem_c) and without (xylem) taking cryogenic extraction-caused bias into consideration. The values presented were calculated from an extensive global compilation of data (8). SI Appendix, Eq. S3 was used to convert xylem to xylem_c. More details are provided in SI Appendix.
