| a | The asterisk (*) following a rest frequency indicates that the frequency is a calculated value. A question mark (?) following the frequency indicates that this is a questionable line detection and should be verified by future observations. A question mark (?) following the formula indicates that the identification was uncertain in the astronomical reference. The symbol NR (or n.r. for telescopes) in the intensity column means that the intensity was not reported. The abbreviation LSB = lower sideband and USB = upper sideband. |
| b | Blended with adjacent transitions, see astronomical reference. |
| c | Line-to-continuum ratio (TL/Tc) = 0.0095. |
| d | Blended with a recombination line. |
| e | In flux units (fu). 1 fu = 10-26 Wm-2 Hz-1 = Jansky (Jy). |
| f | Integrated intensity, ∫ Taδv, in K km s-1. |
| g | Beam brightness temperature. |
| h | Assignment questionable. |
| i | Intensity varies with time. |
| j | Astronomical reference shows partially resolved hyperfine structure. |
| k | Blended with CH313CN. |
| l | Peak line radiation temperature. |
| m | Only the strongest of several velocity components is listed. |
| n | Reported as unidentified in astronomical reference. |
| o | The acetaldehyde and formamide lines were observed in different sidebands and are blended in this observation. |
| p | The frequency for this unidentified line reported by Clark et al. (1979) Cla79 was in error. The correct frequency is 93.780 GHz as shown here. |
| q | Units are 10-16 W/cm2. |
| r | Blended with HCO+ J = 3-2. |
| s | Originally attributed to NH2CHO, however this assignment seems inconsistent with other observations (Cum86). |
| t | Assignment from Cum84. |
| u | Not observed in Orion survey by Sutton et al. (Sut85). |
| v | This line may be blended with NS J = 11/2-9/2. |
| w | This line may be blended with NO J = 5/2-3/2. |
| x | Confirmed in Tur90. |
| y | Although this line is reported in a table of Lor84, it is not apparent in Fig. 2 of this reference. |
| z | The J = 54-53 of HC5N is calculated at 143764.97(10) MHz. |
| aa | Units are 10-4 erg s-1 cm-2 sr-1. |
| NR (n.r.) | not reported |
