| ESO_QC_SKY_LINEl_AWAV | float | Wavelength (air) of the strongest line of group l | Angstrom |
| ESO_QC_SKY_LINEl_FLUX | float | Flux of the strongest line of group l | erg/(s cm2 arcsec2) |
| ESO_QC_SKY_LINEl_NAME | str | Name of the strongest line in group k | |
| parameter_l | int | line group, id l, regexp [0-9]+ | |
