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Table 2

Best-fit spectroscopic parameters for the ground state of CH2D+ (in MHz) obtained using 20 rotational lines of this work.

Symbol Value Symbol Value

A 280 862.61(4) ΦJ 0.000219(4)
B 173 019.812(3) ΦJK
C 105 686.555(3) ΦKJ 0.0058(1)
ΔJ 3.64968(8) ΦK
ΔJK 10.8915(5) φ J 0.000041(3)
ΔK 8.089(9) φ JK 0.00358(3)
δ J 1.39841(5) φ K 0.0069(3)
δ K 12.103(2)

Notes. Only parameters of statistical significance are listed.

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