Helium Lines (3.00 – 4.00 microns)
Infrared Helium Lines
| Atomic Line | Transition | Wavelength (um) |
| HEII | 20-10 | 03.0372 |
| HEII | 7-6 | 03.0912 |
| HEII | 11-8 | 03.0960 |
| HEII | 14-9 | 03.1446 |
| HEII | 19-10 | 03.1501 |
| HEII | 12LIMIT | 03.2081 |
| HEII | 18-10 | 03.2947 |
| HeI | 5-9 | 03.297 |
| HEI | 5P-4S,1Po-1S | 03.3308 |
| HEII | 25-11 | 03.4160 |
| HEII | 17-10 | 03.4830 |
| HEII | 24-11 | 03.4889 |
| HEII | 13-9 | 03.544 |
| HeI | 2S-3P | 03.5592 |
| HEII | 23-11 | 03.5730 |
| HEII | 22-11 | 03.6849 |
| HEI | 5D-4P,3D-3Po | 03.7036 |
| HEII | 21-11 | 03.7983 |
| HEII | 20-11 | 03.9515 |
| HEI | 5P-4D,1Po-1D | 04.0064 |