Table 2.

Summary of parameter estimates (kcal/mol) and quality of model fit for free energy models

Model	Parameter	Estimates (SE)	Quality of model fit
			RSS	AIC	MSE
1	ΔGend,GC	0.37 (0.77)	21.54	119.45	0.74
	ΔGend,AT	−1.82 (0.57)
	ΔGIm,ACT	0.45 (0.40)
	ΔGIm,G	−0.70 (0.24)
	ΔGPy,ACT	−1.25 (0.19)
	ΔGPy,G	0.67 (0.39)
2	ΔGend,GC	0.05 (0.77)	19.47	117.91	0.70
	ΔGend,AT	−2.14 (0.59)
	ΔGIm,ACT	0.42 (0.39)
	ΔGIm,G	−1.20 (0.37)
	ΔGPy,AC	−0.54 (0.45)
	ΔGPy,T	−1.79 (0.36)
	ΔGPy,G	0.35 (0.42)
3	ΔGend,GC	0.30 (0.81)	21.45	121.30	0.77
	ΔGend,AT	−1.90 (0.62)
	ΔGIm,ACT	0.35 (0.51)
	ΔGIm,G	−0.51 (0.61)
	ΔGPy,A	−1.04 (0.63)
	ΔGPy,CT	−1.39 (0.48)
	ΔGPy,G	0.85 (0.65)
4	ΔGend,GC	0.28 (0.75)	19.45	117.87	0.69
	ΔGend,AT	−1.88 (0.56)
	ΔGIm,ACT	0.86 (0.45)
	ΔGIm,G	−1.20 (0.37)
	ΔGPy,AT	−1.27 (0.18)
	ΔGPy,C	0.21 (0.86)
	ΔGPy,G	−0.44 (0.74)

RSS, residual sum of squares; AIC, Akaike Information Criterion; MSE, mean square error.