Table 1: List of telescopes. Column 1: number of published 21-cm line widths; Col. 2: code number of the telescope in LEDA; Col. 3: Name of the telescope.

n	code	Radiotelescope
19 291	9	Arecibo
10 089	1	Nançay
8702	7	NRAO (91 m)
3209	10	Parkes
2476	8	Effelsberg
1245	3	NRAO (43 m)
1062	5	Jodrell B. (MarkI)
816	2	Westerbork
244	14	Jodrell B. (MarkII)
114	11	Owens Valley
451	15	VLA
86	6	Harvard
54	12	Dwingeloo
38	4	Cambridge
37	13	IAR (Argentina)
3199		Optical
51 113		total