Supplementary materials: The C^1\Pi_u state of potassium dimer revisited: an extensive study by polarisation labelling spectroscopy method

The files Table_I.txt, Table_II.txt, Table_III.txt, and Table_IV.txt contain spectroscopic data for the state in potassium dimer K2. The tables provide experimentally derived rovibrational energy levels and related molecular constants for the C1Πu electronic state of K2, obtained from high-resolution spectroscopic measurements and subsequent analysis. Each file corresponds to a separate table from the associated publication and is provided in plain text format for easy reuse in modelling, fitting procedures, and comparison with ab initio calculations. File contents Table_I.txt Rovibrational term values (energy levels) for the investigated electronic state(s) of K2.Table_II.txt Molecular constants and spectroscopic parameters derived from the experimental dataset (e.g. vibrational and rotational constants).Table_III.txt Additional fitted parameters and/or Dunham-type coefficients describing the rovibrational structure of K2.Table_IV.txt Complementary data used in the analysis, including derived quantities relevant for potential energy curve (PEC) reconstruction and comparison.