Rotational diagram of CH₂CHCN in its ground state. The upper panel displays the two components derived from the line profiles. The middle panel shows two linear fits to the narrow component points; these linear regressions yield temperatures and column densities of T_rot = 125 ± 16 K and N = (1.3 ± 0.1) × 10¹⁵ cm^-2 (Q_rot = 7.06 × 10³), and T_rot = 322 ± 57 K and N = (1.0 ± 0.2) × 10¹⁵ cm^-2 (Q_rot = 2.92 × 10⁴). Likewise, the bottom panel shows another two linear fits to the points corresponding to the wide component. The results of these fits are rotational temperatures of T_rot = 90 ± 14 K and T_rot = 227 ± 130 K, and column densities of (2.9 ± 0.5) × 10¹⁵ cm^-2 (Q_rot = 4.31 × 10³) and (1.2 ± 0.9)×10¹⁵ cm^-2 (Q_rot = 1.73 × 10⁴), respectively.