| Line | Upper level | Lower Level | Remark | ||||||||||||
| Wavelength in air (Å) | C. | SNR | J | P | Energy (cm−1) | A (MHz) | B (MHz) | J | P | Energy (cm−1) | A (MHz) | B (MHz) | Ref. | ||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | |
| Lines explained by the new levels | |||||||||||||||
| 6520.644 | e | 240 | 13/2 | even | 35449.040 | −8.0(5) | 10(10) | 11/2 | odd | 20117.368 | 60.4(5) | 100(10) | t.w. | nf 6249, OGS | |
| 14908.421 | FT | 8 | 13/2 | even | 35449.040 | −8.0(5) | 10(10) | 11/2 | odd | 28734.254 | 367(5) | - | t.w. | ||
| 6519.869 | e, f | 17 | 13/2 | even | 41207.994 | 91.6(5) | 170(50) | 11/2 | odd | 25874.500 | 44.0(5) | 168(10) | t.w. | nf 6266, OGS | |
| 6108.32 | e | - | 13/2 | even | 41207.994 | 91.6(5) | 170(50) | 11/2 | odd | 24841.410 | 422(5) | 200(20) | t.w. | f 6519, f7673nf 6699, DL | |
| 7673.103 | f | 9 | 13/2 | even | 41207.994 | 91.6(5) | 170(50) | 11/2 | odd | 28179.043 | 17.3(4) | - | |||
| Lines observed as fluorescence decays from the lower levels, investigated to observe more accurate hf constants | |||||||||||||||
| 6249.913 | e | 2600 | 11/2 | odd | 20117.368 | 60.4(5) | 100(10) | 9/2 | even | 4121.572 | 489.534(1) | 32.180(34) | OGS | ||
| 6266.022 | e | 670 | 11/2 | odd | 25874.500 | 44.0(5) | 168(10) | 9/2 | even | 9919.826 | 560.3(2) | 200(6) | OGS | ||
| Blend line in the wing of 6520.644 | |||||||||||||||
| 6520.735 | e | 5 | 5/2 | even | 35414.441 | −151(2) | 0(15) | 3/2 | odd | 20082.982 | 83.6(10) | - | nf 5740, DL | ||
| Line checking the reliability of old wavelength values | |||||||||||||||
| 6519.319 | e | 46 | 5/2 | even | 30354.282 | 493(2) | 45(15) | 7/2 | odd | 15019.496 | 673.9(3) | 72(3) | nf 8324, DL | ||