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Fig. A.4

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Continued: Spectra observed towards L1551-IRS5 (see Table A.4 in TMB scale). Lower left panel of the first column: In the CCD(3–2) spectrum the velocity scale is centered on the brightest (2 D2) hyperfine component (vertical blue line) at 216428.3 MHz; the vertical red lines indicate the offset in velocity of the fainter components (0.3 D2 at 216430.3 MHz; 0.7 D2 at 216428.8 MHz). Upper middle panel: In the CCD(3–2) spectrum the velocity scale is centered on the brightest (3 D2) hyperfine component (vertical blue line) at 216372.8 MHz; the vertical red lines indicate the offset in velocity of the fainter components (1.9 D2 at 216373.3 MHz; 1.4 D2 at 216373.2 MHz). In the DCN(3–2) spectrum the velocity scale is centered on the brightest (35 D2) hyperfine component (vertical blue line) at 217238.3 MHz; the vertical red lines indicate the offset in velocity of the fainter components (20 D2 at 217238.6 MHz; 16 D2 at 217238.3 MHz). In the N2D+ spectrum the velocity scale is centered on the brightest (312 D2) hyperfine component (vertical blue line) at 231319.9 MHz; the vertical red line indicates the offset in velocity of the brightest transition of 40 fainter components (5 D2 at 231324.5 MHz).

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