Table 5.

Standardized mean differences between one group and the other two combined for the Great Plains ecoregion

	Grouped by log TN (unadjusted)			Adjusted for the GPS
Variable	[2.05, 2.56]	[2.56, 3.19]	[3.19, 4.08]	[2.05, 2.56]	[2.56, 3.19]	[3.19, 4.08]
ELEV	7.45	− 1.37	− 9.02	1.85	0.30	0.91
Longitude	− 5.37	− 0.05	− 3.92	− 1.65	0.98	− 2.14
Log(PRECIP)	3.15	− 2.94	− 0.87	2.08	− 2.17	− 1.39
Log(AREA)	− 3.46	2.02	− 0.29	− 1.63	1.89	1.22
Log(CL)	0.63	− 1.31	− 0.96	0.69	− 1.48	− 1.42
Log(HCO3)	− 4.67	1.04	− 2.13	− 1.55	0.19	− 0.98
Log(SO4)	− 2.22	0.11	− 1.53	0.45	− 0.37	− 0.46
SED	0.07	− 2.21	− 2.41	2.38	− 1.41	− 2.08
STRMTEMP	− 3.59	0.99	− 1.49	− 1.50	0.26	− 0.81
Percent.AGT	− 4.05	− 0.78	− 3.98	− 0.52	− 1.13	− 1.87
Percent.URB	1.05	− 1.62	− 0.99	0.21	− 1.80	− 1.74
Percent.Canopy	0.16	0.20	0.35	− 0.14	0.39	1.05
Riparian.Disturb	− 2.36	2.19	0.65	− 1.52	1.83	0.98

See Table 3 for explanations