## 2 Experiment
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline  & \multicolumn{2}{c}{**R(106)50-0**} & \multicolumn{2}{c}{**R(100)49-0**} & \multicolumn{2}{c}{**R(84)47-0**} & \multicolumn{2}{c}{**P(82)47-0**} \\ \cline{2-9}  & **Obs.** & **Obs.-Cal.** & **Obs.** & **Obs.-Cal.** & **Obs.** & **Obs.-Cal.** & **Obs.** & **Obs.-Cal.** \\ \hline a\({}_{1}\) & 0.0 & \(-\)0.6 & 0.0 & \(-\)0.3 & 0.0 & 0.1 & 0.0 & \(-\)0.3 \\ a\({}_{2}\) & 106,679.4 & 10.6 & 133,636.6 \({}^{*}\) & 20.1 & 180,615.0 & 4.4 & 186,005.2 & 2.0 \\ a\({}_{3}\) & 241,694.6 & \(-\)11.3 & 248,832.0 & \(-\)6.9 & 261,646.6 & \(-\)4.9 & 263,087.9 & \(-\)3.6 \\ a\({}_{4}\) & 287,194.3 & \(-\)2.8 & 307,368.9 & 4.6 & 303,297.8 & 3.7 & 301,900.2 & 2.8 \\ a\({}_{5}\) & 321,834.8 & 10.3 & 315,171.8 & 6.2 & 342,167.7 & \(-\)2.0 & 346,140.8 & \(-\)1.9 \\ a\({}_{6}\) & 335,920.0 & \(-\)9.0 & 349,683.2 & \(-\)3.8 & 373,765.7 & \(-\)3.1 & 376,498.3 \({}^{*}\) & 2.1 \\ a\({}_{7}\) & 455,458.3 & \(-\)11.0 & 428,980.4 & \(-\)4.9 & 383,039.2 & \(-\)5.0 & 377,690.8 \({}^{*}\) & \(-\)14.7 \\ a\({}_{8}\) & 508,736.3 & 12.3 & 495,666.6 & 6.5 & 472,932.5 & 4.5 & 470,257.7 & 2.4 \\ a\({}_{9}\) & 556,748.7 & 3.2 & 537,316.3 & 2.4 & 504,020.2 & 3.2 & 500,110.5 & \(-\)1.8 \\ a\({}_{10}\) & 563,631.1 & 0.2 & 564,090.1 & \(-\)1.9 & 564,983.0 & 0.0 & 565,021.9 & 0.8 \\ a\({}_{11}\) & 615,902.0 & 0.1 & 629,677.7 & 3.8 & 653,574.1 & 0.8 & 656,264.3 & 0.3 \\ a\({}_{12}\) & 658,122.7 & \(-\)3.6 & 665,218.9 & \(-\)3.3 & 677,414.0 & \(-\)1.6 & 678,746.6 & \(-\)0.2 \\ a\({}_{13}\) & 750,756.8 & 1.6 & 744,818.7 & \(-\)1.5 & 734,877.9 & 0.3 & 733,643.8 & 1.1 \\ a\({}_{14}\) & 794,627.6 & \(-\)0.4 & 781,947.8 & \(-\)0.9 & 760,263.5 & \(-\)1.0 & 757,680.9 & \(-\)2.2 \\ a\({}_{15}\) & 846,558.6 & 0.5 & 847,196.5 & 0.0 & 848,449.5 & 0.6 & 848,507.5 & 0.5 \\ \hline SD & & 8.6 & & 5.0 & & 3.6 & & 2.4 \\ \hline \multicolumn{9}{l}{\({}^{*}\)Values excluded from the fit.} \\ \end{tabular}
\end{table} 
Table 2: Observed and calculated hyperfine splittings of the even \(J\) number transitions, where all values are in kHz, and SD denotes the standard deviation of the fit. \begin{table}
\begin{tabular}{c c c c c} \hline  & \multicolumn{2}{c}{**R(59)45-0**} & \multicolumn{2}{c}{**P(71)46-0**} \\ \cline{2-5}  & **Obs.** & **Obs.-Cal.** & **Obs.** & **Obs.-Cal.** \\ \hline b\({}_{1}\) & 0.0 & 3.6 & a\({}_{1}\) & 0.0 & 4.0 \\ b\({}_{2}\) & 83,603.1 & 1.8 & a\({}_{2}\) & 101,327.1 & 0.6 \\ b\({}_{3}\) & 163,631.9 & \(-\)1.5 & a\({}_{3}\) & 199,012.9 & \(-\)3.6 \\ b\({}_{4}\) & 279,747.0 & \(-\)1.0 & a\({}_{4}\) & 286,598.2 & \(-\)0.1 \\ b\({}_{5}\) & 357,652.8 & \(-\)2.6 & a\({}_{5}\) & 370,322.1 & \(-\)3.2 \\ b\({}_{6}\) & 375,380.5 & 1.8 & a\({}_{6}\) & 397,768.6 & 2.4 \\ b\({}_{7}\) & 449,748.8 \({}^{*}\) & \(-\)0.0 & a\({}_{7}\) & 460,292.4 & \(-\)1.4 \\ b\({}_{8}\) & 452,019.3 \({}^{*}\) & \(-\)2.9 & a\({}_{8}\) & 478,039.8 & \(-\)0.1 \\ b\({}_{9}\) & 478,373.9 & \(-\)3.4 & a\({}_{9}\) & 488,201.7 & \(-\)3.8 \\ b\({}_{10}\) & 536,505.4 & 0.4 & a\({}_{10}\) & 561,763.0 & 2.6 \\ b\({}_{11}\) & 558,578.1 & \(-\)0.1 & a\({}_{11}\) & 586,521.9 & 2.0 \\ b\({}_{12}\) & 586,575.4 & \(-\)1.2 & a\({}_{12}\) & 595,357.3 & \(-\)0.5 \\ b\({}_{13}\) & 649,336.5 & \(-\)1.6 & a\({}_{13}\) & 666,749.0 & \(-\)0.6 \\ b\({}_{14}\) & 714,116.2 & \(-\)1.0 & a\({}_{14}\) & 739,068.0 & \(-\)0.2 \\ b\({}_{15}\) & 735,632.0 & \(-\)2.2 & a\({}_{15}\) & 749,684.8 & \(-\)1.1 \\ b\({}_{16}\) & 769,617.0 & \(-\)0.1 & a\({}_{16}\) & 784,372.6 & \(-\)0.2 \\ b\({}_{17}\) & 810,264.1 & 1.9 & a\({}_{17}\) & 830,673.5 & 2.0 \\ b\({}_{18}\) & 842,749.7 & 1.1 & a\({}_{18}\) & 863,660.5 & 1.5 \\ b\({}_{19}\) & 908,277.9 & 0.9 & a\({}_{19}\) & 923,297.9 & \(-\)0.8 \\ b\({}_{20}\) & 930,226.5 & 1.1 & a\({}_{20}\) & 947,820.3 & 0.3 \\ b\({}_{21}\) & 955,688.4 & 2.0 & a\({}_{21}\) & 975,243.0 & 0.1 \\ \hline SD & & 2.1 & & & 2.2 \\ \hline \multicolumn{9}{l}{\({}^{*}\)Values excluded from the fit.} \\ \end{tabular}
\end{table}