  We present a new version of a sample of galaxies from the Revised Flat Galaxy
Catalogue (RFGC), which have redshift and HI line width data. We also give the
parameters of the collective motion model determined upon this sample. The
considered models of motion include the dipole (bulk flow), the quadrupole
(cosmic shear) and the octupole components. We also considered higher-order
multipoles. In all cases the obtained parameters matched the {\Lambda}CDM
cosmology.
