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Table 2:

Hyperfine components of the NH3 (J,K) = (1,1) transition.
# F'1 F' F1 F Weight vi, m s-1 
1 1 1.5 0 0.5 0.317 -19 549.98(48)
  1 0.5 0 0.5 0.159 -19 411.73(61)
2 1 1.5 2 2.5 0.357 -7815.25(63)
  1 1.5 2 1.5 0.040 -7372.80(75)
  1 0.5 2 1.5 0.198 -7233.48(58)
3 2 1.5 2 2.5 0.071 -250.92(60)
  1 1.5 1 1.5 0.198 -213.00(47)
  2 2.5 2 2.5 1.000 -132.38(47)
  1 0.5 1 1.5 0.040 -75.17(75)
  2 1.5 2 1.5 0.643 192.27(56)
  2 2.5 2 1.5 0.071 311.03(80)
  1 1.5 1 0.5 0.040 322.04(35)
  1 0.5 1 0.5 0.079 460.41(46)
4 2 1.5 1 1.5 0.040 7351.32(49)
  2 2.5 1 1.5 0.357 7469.67(73)
  2 1.5 1 0.5 0.198 7886.69(72)
5 0 0.5 1 1.5 0.317 19 315.90(71)
  0 0.5 1 0.5 0.159 19 851.27(35) $^{\dagger}$

Notes. The velocity offsets, vi, are relative to 23.694495487 GHz. Data from Kukolich (1967) and Ho (1977). Shown in parentheses are 1$\sigma $ errors. $^{(\dagger)}$ The error of 0.35 m s-1  corresponds to the difference between theoretically predicted (Ho 1977) and astronomically determined (Rydbeck et al. 1977) frequencies.


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