Specific Corrections and Reanalysis of the Data:

In the reanalysis of ³⁵ClNO, two measured lines were excluded from the fit since they show significant deviations. The 10_9,2-9_9,1 transition reported in [66012] at 111 213.25 MHz is calculated 1.48 MHz higher in frequency with an uncertainty of 0.14 MHz and the 18_0,18-17_0,17 line reported in [66012] at 198 798.54 MHz is calculated 15.62 MHz lower in frequency with an uncertainty of 0.18 MHz. The error in the 4_1,3-4_0,4 transition frequency reported in [75010] has been corrected to read 83 635.88 MHz. Very poor agreement was obtained in the centrifugal distortion fit to the 2_0,2-1_0,1 transition and hyperfine splittings for ³⁷ClNO. The strongest components, the unresolved pair F = 7/2-5/2 and F=5/2-3/2, are calculated 0.80 MHz higher than observed and the F = 3/2-3/2 transition is calculated 1.32 MHz higher than observed. The hyperfine analysis included the three components of the 1_0,1-0_0,0 transition and the three unblended components of the 2_1,2­1_1,1 and 2_1,1­1_1,0 transitions. The discrepancy could arise from ignoring the ¹⁴N hyperfine splitting, although this appears unlikely since these splittings were apparently unresolved.