xnn.common.models.ops.ATOMIC_MASSES

xnn.common.models.ops.ATOMIC_MASSES = [1.0, 1.008, 4.0026, 6.94, 9.0122, 10.81, 12.011, 14.007, 15.999, 18.9984, 20.1797, 22.9898, 24.305, 26.9815, 28.085, 30.9738, 32.06, 35.45, 39.948, 39.0983, 40.078, 44.9559, 47.867, 50.9415, 51.9961, 54.938, 55.845, 58.9332, 58.6934, 63.546, 65.38, 69.723, 72.63, 74.9216, 78.971, 79.904, 83.798, 85.4678, 87.62, 88.9058, 91.224, 92.9064, 95.95, 97.9072, 101.07, 102.9055, 106.42, 107.8682, 112.414, 114.818, 118.71, 121.76, 127.6, 126.9045, 131.293, 132.9055, 137.327, 138.9055, 140.116, 140.9077, 144.242, 144.9128, 150.36, 151.964, 157.25, 158.9254, 162.5, 164.9303, 167.259, 168.9342, 173.054, 174.9668, 178.49, 180.9479, 183.84, 186.207, 190.23, 192.217, 195.084, 196.9666, 200.592, 204.38, 207.2, 208.9804, 208.9824, 209.9872, 222.0176, 223.0197, 226.0254, 227.0277, 232.0377, 231.0359, 238.0289, 237.0482, 244.0642, 243.0614, 247.0703, 247.0703, 251.0796, 252.083]

Standard atomic weights (u) by atomic number, Z = 0 to 99 (the ASE table), for center_of_mass().