H₂CO 6 cm Spectral-Line Observational Dataset of the Cygnus-X Giant Molecular Cloud

The dataset mainly includes source coordinates, H₂CO spectra, peak intensity, integrated intensity, central velocity, line width, rms noise, and associated spectral fitting parameters. For selected sources, derived physical parameters, including excitation temperature, optical depth, column density, non-thermal velocity dispersion, and Mach number, are also provided.The dataset can be used to investigate the kinematic properties, turbulence, and physical conditions of cold molecular gas in Cygnus-X, as well as their relationship with star-formation activity.

It may also serve as a reference dataset for spectral-line analysis, methodological validation, and statistical studies of H₂CO absorption.