Difference between the velocity components of each fiber in NGC 1333 SE, as recognized after the clustering. Left: resulting difference after subtracting the N₂H⁺ υ_LSR from the HC₃N υ_LSR of the clusters belonging to the redshifted fiber. Middle: resulting difference after subtracting the N₂H⁺ υ_LSR from the HC₃N υ_LSR of the clusters belonging to the blueshifted fiber. The blueshifted fiber map is zoomed into the region covered by the emission. Right: 2D KDE of the HC₃N υ_LSR vs. N₂H⁺ υ_LSR. The dotted line represents the location where the velocities are equal, and the dash-dotted line shows where the HC₃N υ_LSR is higher by 0.11 km s⁻¹ (the median difference for the redshifted fiber).