Table 2. Individual intensities of the lines of the P(4) manifold of the ν ₃ band of ¹²CH₄ measured in this work.

Assignment	Line intensity (cm per molecule)
	This work	Ref. 33	(This work−Ref. 33)/Ref. 33(%)
P(4) F2(1)	7.13(13) × 10−20	7.310(147) × 10−20	−2.41
P(4) E(1)	4.80(13) × 10−20	4.887(98) × 10−20	−1.86
P(4) F1(1)	7.24(13) × 10−20	7.339(147) × 10−20	−1.28
P(4) A1(1)	1.206(20) × 10−19	1.227(25) × 10−19	−1.71

Comparison with the data published in Ref. 33. The temperature is 296 K, and the intensities provided are corrected for isotopic abundance (0.98893 for ¹²CH₄ (Ref. 33)).