Notes. 1) CIG number; 2) visual classification (0 = symmetric, 1 = slightly asymmetric, 2 = asymmetric); 3) flux ratio asymmetry parameter A_{flux ratio}; 4) ΔA(rms): uncertainty owing to the rms of the H i profile; 5) ΔA(mean   vel.): A_{flux ratio} uncertainty owing to the determination of the mean velocity; and 6) ΔA_{flux ratio}, the final derived uncertainty of A_{flux ratio}, including the effect of pointing offsets. The full list is available in electronic form at the CDS or from http://amiga.iaa.es.