Distribution of the orbital poles of the MW streams included in the GALSTREAMS catalogue (represented with a Mollweide projection). Since we only consider one orbital sense, just one half (120° < l < 300°) of the l range is shown. The nominal orbital poles for each stream are represented by the large coloured points. Their 1σ uncertainty is shown by the point clouds of the same colour. The green cross marks the position of the observed VPOS direction (l, b) = (164.0°, −6.9°) (Pawlowski et al. 2015) and the green circle surrounding it represents the threshold of the VPOS membership area considered in our statistical analysis (see Section 3). The red star marks the position of the Sagittarius dwarf galaxy. The colour gradient of the streams represents their Galactocentric distance.