Muon radiative energy loss (in 1.0E06 cm^2/g) in astatine (At) with Z = 85, A = [209.98715(6)] (f12.0,4f12.4) E (GeV) b_brem b_pair b_nucl b_total 2. 2.0583 0.3905 0.3624 2.8113 5. 2.8564 1.9904 0.3870 5.2338 10. 3.5079 3.2336 0.3795 7.1210 20. 4.1764 4.3820 0.3613 8.9197 50. 5.0504 6.1370 0.3510 11.5384 100. 5.6713 7.2942 0.3439 13.3093 200. 6.2371 8.3185 0.3406 14.8962 500. 6.8709 9.2554 0.3407 16.4670 1000. 7.2516 9.7508 0.3460 17.3484 2000. 7.5471 10.1075 0.3543 18.0089 5000. 7.8206 10.4054 0.3694 18.5954 10000. 7.9555 10.5427 0.3845 18.8827 20000. 8.0448 10.6323 0.4020 19.0792 50000. 8.1185 10.6989 0.4294 19.2468 100000. 8.1511 10.7265 0.4528 19.3304