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Table 1
Properties of the SOHO/SUMER observations.
| Spectral | Wavelength | Slit dimensions | Exp. | No. |
| window | range | (width × height) | time | of obs. |
| [Å] | [arcsec] | [s] | ||
|
|
||||
| Lyα | 1175.0–1218.5 | 0.28 × 119.6 | 15 | 18 |
| Lyβ | 987.3–1032.8 | 0.99 × 119.6 | 98 | 36 |
| Lyγ, Lyδ | 932.0–977.7 | 0.99 × 119.6 | 98 | 36 |
| Ly5 to | ||||
| 900.2–946.0 | 0.28 × 119.6 | 98 | 36 | |
| Continuum | ||||
Notes. The table includes: spectral window, wavelength range, slit dimensions, exposure time, and number of observations.
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