Reference Label	Details
est unc	estimated uncertainty
Karton 2011	A. Karton, S. Daon, J. M. L. Martin, Chem. Phys. Lett. 510, 165-178 (2011) W4-11: A High-Confidence Benchmark Dataset for Computational Thermochemistry Derived from First-Principles W4 Data
Karton 2017	A. Karton, N. Sylvetsky, and J. M. L. Martin, J. Computat. Chem. 38, 2063-2075 (2017) W4-17: A Diverse and High-Confidence Dataset of Atomization Energies for Benchmarking High-Level Electronic Structure Methods