Table 1. Regression Coefficients (β̂) with Standard Errors (σ_β̂) for Normalized, BIC-Selected Trend Variables in BWDO and BWHF Models^a,

^b

variable	BWDO (mg L–1)		BWHF
	β̂	σβ̂	β̂	σβ̂
Easting	–0.62	0.09	0.018	0.007
Easting2	0.25	0.07	–0.020	0.006
Northing	–0.36	0.09	n.s.
Depth	–2.31	0.18	n.a.
Depth2	2.45	0.17	n.a.
BWDO	n.a.		–0.065	0.005
c.s.E 1998	–1.35	0.45	n.s.

^aParameters optimized by generalized least squares.

^bc.s.E = cruise specific trend for Easting, n.s.=not selected, n.a.=not available.