Below is a list of Paschen, Brackett, Pfund, and Humphreys series lines of atomic hydrogen in the 1-5µm region. Some of these lines are prominent in R~1000 spectra of A0V stars. Wavelengths are in vacuum
| SERIES | TRANSITION | WAVELENGTH (µm) |
| Paschen | 4-3 | 1.87561 |
| Paschen | 5-3 | 1.28216 |
| Paschen | 6-3 | 1.09411 |
| Paschen | 7-3 | 1.00521 |
| Paschen | 8-3 | 0.95486 |
| Paschen | 9-3 | 0.92315 |
| Paschen | 10-3 | 0.90174 |
| Paschen | 11-3 | 0.88652 |
| Paschen | 12-3 | 0.87529 |
| Paschen | 13-3 | 0.86674 |
| Paschen | 14-3 | 0.86008 |
| Paschen | 15-3 | 0.85477 |
| Paschen | 16-3 | 0.85048 |
| Paschen | 17-3 | 0.84696 |
| Paschen | 18-3 | 0.84403 |
| Brackett | 5-4 | 4.05226 |
| Brackett | 6-4 | 2.62587 |
| Brackett | 7-4 | 2.16612 |
| Brackett | 8-4 | 1.94509 |
| Brackett | 9-4 | 1.81791 |
| Brackett | 10-4 | 1.73669 |
| Brackett | 11-4 | 1.68111 |
| Brackett | 12-4 | 1.64117 |
| Brackett | 13-4 | 1.61137 |
| Brackett | 14-4 | 1.58849 |
| Brackett | 15-4 | 1.57050 |
| Brackett | 16-4 | 1.55607 |
| Brackett | 17-4 | 1.54431 |
| Brackett | 18-4 | 1.53460 |
| Brackett | 19-4 | 1.52647 |
| Brackett | 20-4 | 1.51960 |
| Brackett | 21-4 | 1.51374 |
| Pfund | 7-5 | 4.65378 |
| Pfund | 8-5 | 3.74056 |
| Pfund | 9-5 | 3.29699 |
| Pfund | 10-5 | 3.03920 |
| Pfund | 11-5 | 2.87300 |
| Pfund | 11-5 | 2.87300 |
| Pfund | 12-5 | 2.75827 |
| Pfund | 13-5 | 2.67513 |
| Pfund | 14-5 | 2.61265 |
| Pfund | 15-5 | 2.56433 |
| Pfund | 16-5 | 2.52609 |
| Pfund | 17-5 | 2.49525 |
| Pfund | 18-5 | 2.46999 |
| Pfund | 19-5 | 2.44900 |
| Pfund | 20-5 | 2.43136 |
| Pfund | 21-5 | 2.41639 |
| Pfund | 22-5 | 2.40355 |
| Pfund | 23-5 | 2.39248 |
| Pfund | 24-5 | 2.38282 |
| Pfund | 25-5 | 2.37438 |
| Pfund | 26-5 | 2.36694 |
| Pfund | 27-5 | 2.36035 |
| Pfund | 28-5 | 2.35448 |
| Pfund | 29-5 | 2.34924 |
| Pfund | 30-5 | 2.34453 |
| Pfund | 31-5 | 2.34028 |
| Pfund | 32-5 | 2.33644 |
| Pfund | 33-5 | 2.33296 |
| Pfund | 34-5 | 2.32979 |
| Humphreys | 10-6 | 5.12865 |
| Humphreys | 11-6 | 4.67251 |
| Humphreys | 13-6 | 4.17080 |
| Humphreys | 14-6 | 4.02087 |
| Humphreys | 15-6 | 3.90755 |
| Humphreys | 16-6 | 3.81945 |
| Humphreys | 17-6 | 3.74940 |
| Humphreys | 18-6 | 3.69264 |
| Humphreys | 19-6 | 3.64593 |
| Humphreys | 20-6 | 3.60697 |
| Humphreys | 21-6 | 3.57410 |
| Humphreys | 22-6 | 3.54610 |
| Humphreys | 23-6 | 3.52203 |
| Humphreys | 24-6 | 3.50116 |
| Humphreys | 25-6 | 3.48296 |