Table 1.

P values for a nonparametric test (Kruskal−Wallis multiple comparison test; α = 0.05) for differences among precipitation offsets of different water types in the globally compiled dataset in ref. 1

	dstream	dsoil	dxylem	dxylem_c
dgw	<0.001	<0.001	<0.001	<0.001
dstream		<0.001	<0.001	<0.001
dsoil			<0.001	<0.001
dxylem				<0.001

Here d_gw, d_stream, d_soil, d_{xylem_c}, and d_xylem refer to precipitation offsets of groundwater, stream water, soil water, and xylem water with and without taking cryogenic extraction caused bias into consideration, respectively. Whole-dataset averaged offset value for each water type can be found in figure 5 in ref. 3.