Open Access

Table 2.

Parameters in Eq. (4) and the number of galaxies above and below 50% completeness in the four samples.

Survey a1 a2 Wcut σlog S21 S21 ≥ S21, 50% S21 < S21, 50%
HIPASS 0.412 1.528 2.232 0.139 3079 649
ALFALFA 1.162 2.400 2.476 0.113 18 713 1898
FASHI north 1.219 2.295 2.150 0.322 16 879 13 872
FASHI south 1.069 2.157 2.176 0.259 2720 1422

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