Supplemental Information for the paper "Precise frequencies of H2O-16 lines protected for radio astronomy" by Altman et al. (2025)

Supporting Information for the paper "Precise frequencies of H2O-16 lines protected for radio astronomy" by A. Altman [1], R. Tóbiás [2], A. S. Bogomolov [1], M. L. Diouf [3], F. M. J. Cozijn [3], A. G. Császár [4], C. Lauzin [1], and W. Ubachs [3] [1] Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Louvain-la-Neuve, Belgium. [2] Department of Chemistry, University of Vermont, Burlington, VT, 05405, USA & Institute of Chemistry, ELTE Eötvös Loránd University, H-1518 Budapest 112, P.O. Box 32, Hungary. [3] Department of Physics and Astronomy, LaserLaB, Vrije Universiteit, De Boelelaan 1100, 1081 HZ Amsterdam, The Netherlands. [4] Institute of Chemistry, ELTE Eötvös Loránd University, H-1518 Budapest 112, P.O. Box 32, Hungary Three files: table_S1.txt : List of new experimental H2O-16 transitions recorded with the NICE-OHMS technique table_S2.txt : Detailed comparison of previous laboratory measurement results with the SNAPS-predicted frequencies obtained for the H2O-16 lines of Table 2 in the main text table_S3.txt : Basic cycles associated with the shortest-path-based forest of the ultraprecise H2O-16 spectroscopic network