Table 1. Regression Coefficient of Descent Rate log10 P(t) = p0 + p1t + p2t2 + p3t3 + p4t4, Estimated From a Fourth-Order Polynomial Function of the Averaged CO Index Maxima, as a Function of Time (day)


	Regression Coefficients for P(t)

NH mesospheric late descenta	p0 = -43.671
	p1 = 1.487
	p2 = -0.019
	p3 = 1.039e-04
	p4 = -1.944e-07
NH stratospheric early descentb	p0 = -0.307
	p1 = 0.042
	p2 = -9.487e-04
	p3 = 1.243e-05
	p4 = -5.615e-08
SHc	p0 = -2.623
	p1 = 0.073
	p2 = -6.679e-04
	p3 = 3.069e-06
	p4 = -5.274e-09

aDay 65 to day 112; day 1 begins at first of December. P(t) is averaged for strong SSW years (2006 and 2009).
bDay 1 to day 110; day 1 begins at first of December. P(t) is averaged for 2005, 2007, 2008, and 2010.
cDay 1 to day 180; Day 1 begins at first of May. P(t) is averaged for 2005-2009.