Investigated level Investigated line, combining level Hf constants of the inv. level from ref. Energy (cm−1) J P A (MHz) B (MHz) Wavel. (Å) Energy (cm−1) J P A (MHz) Remark A (MHz) Even 22936.90 7/2 e 257.6 (20) 6444.89 39845.51 9/2 o 385.9 (20)* 266 (5) [18] 23010.58 9/2 e 130.1 (20) 5938.38 39845.51 9/2 o 385.9 (20) 94 (10) [18] 23048.58 11/2 e 84.7 (20) 5912.51 39845.51 9/2 o 385.9 (20)* 82 (4) [18] Odd 38448.77 9/2 o 437.0 (30) 6444.89 22936.90 7/2 e 257.6 (20)* 390 (50) [18] 38583.04 13/2 o 501.1 (20) −135 (25) 6435.52 23048.58 11/2 e 84.7 (20)* 39020.81 11/2 o 170.0 (30) 6244.28 23010.58 9/2 e 130.1 (20)* 39380.77 9/2 o 345.1 (30) 6106.97 23010.58 9/2 e 130.1 (20)* Q = 4 mean 346.2 (30) 6121.18 23048.58 11/2 e 84.7 (20)* Q = 2 345.6 (30) 39426.84 7/2 o 516 (6) 6089.84 23010.58 9/2 e 130.1 (20)* 39620.13 7/2 o 380.7 (20) 6018.97 23010.58 9/2 e 130.1 (20)* 39845.51 9/2 o 385.9 (20) 5912.51 22936.90 7/2 e 257.6 (20) 39885.66 7/2 o 374.1 (30) 5898.50 22936.90 7/2 e 257.6 (20)* Q = 17 376.4 (30) 5924.26 23010.58 9/2 e 130.1 (20)* Q = 6 374.7 (30) 40003.00 11/2 o 402.4 (30) 23010.58 9/2 e 130.1 (20)* Q = 2 405.2 (30) 5896.53 23048.58 11/2 e 84.7 (20)* Q = 8 404.6 (30) 40008.52 9/2 o - 5856.05 22936.90 7/2 e 257.6 (20)* Ok mean 320.0 (70) 5881.44 23010.58 9/2 e 130.1 (20)* Q = 3 321.1 (30) 5894.61 23048.58 11/2 e 84.7 (20)* Q = 8 320.8 (40) 40421.93 9/2 o 324.0 (30) 5741.79 23010.58 9/2 e 130.1 (20)*