Table 1B.

Estimate of higher Rydberg levels in HCl^a

971 Å Series n*	Rydberg wavelength (Å)	904 Å Series n*	Rydberg wavelength (Å)
1.94	971	2 28	904
2.94	841	3.28	824
3.94	803	4.28	796
4.94	787	5.28	783

^a Estimate of band origins for two Rydberg series with constant quantum defects of 0.06 and 0.72 respectively.