Table 4.

Linear fit parameters for DG crest (mean ± std)

		Slope	Int.	Pearson		ANCOVA
	Region	µg/gmetal:µg/gMn	µg/g	r	p	F	p
Fe/Mn	HPCf2	0.79 ± 0.11	8.14 ± 0.07	0.13	<0.01	92.24a	<0.01
	HPCf4	2.81 ± 0.17	8.29 ± 0.13	0.35	<0.01
	HPCf5	−0.24 ± 0.19	6.51 ± 0.12	−0.03	0.20
Cu/Mn	HPCf2	−0.28 ± 0.02	1.29 ± 0.01	−0.21	<0.01	13.47b	<0.01
	HPCf4	−0.01 ± 0.03	0.82 ± 0.02	−0.01	0.77
	HPCf5	−0.06 ± 0.07	0.98 ± 0.05	−0.02	0.41
Zn/Mn	HPCf2	3.22 ± 0.10	4.88 ± 0.06	0.51	<0.01	112.77a	<0.01
	HPCf4	−2.12 ± 0.33	12.48 ± 0.24	−0.15	<0.01
	HPCf5	−0.12 ± 0.42	16.89 ± 0.27	−0.01	0.77

^aAll slopes statistically different from each other

^bSlope of this region is statistically different than the slopes of the other regions