Color–magnitude and proper-motion diagrams of fields associated with a spur above GD-1 (top), and fields related to the blob below GD-1 (bottom). The panels on the left show properties in stream fields (the darkest rectangles in the middle panel), the middle panels present spur and blob (medium rectangles), and the right-most panels are control fields on the opposite sides from spur and blob (lightest rectangles). Selection boxes are shown as shaded regions in all CMD and proper-motion panels. Both the spur and the blob fields have more stars in the CMD selection box than the corresponding control fields. The proper motions of these stars follow the distribution of stars in adjacent stream fields, thus confirming the association of these off-track features with GD-1.