Muon radiative energy loss (in 1.0E06 cm^2/g) in polyethylene terephthalate (Mylar) [(C%10#H%8#O%4#)%n#] with Z/A = 0.52037 (f12.0,4f12.4) E (GeV) b_brem b_pair b_nucl b_total 2. 0.2602 0.1135 0.4701 0.8438 5. 0.3528 0.2805 0.4972 1.1304 10. 0.4294 0.4245 0.4823 1.3361 20. 0.5102 0.5817 0.4601 1.5519 50. 0.6203 0.8026 0.4358 1.8588 100. 0.7029 0.9593 0.4240 2.0862 200. 0.7806 1.1039 0.4180 2.3025 500. 0.8731 1.2529 0.4171 2.5432 1000. 0.9325 1.3445 0.4239 2.7009 2000. 0.9818 1.4090 0.4353 2.8261 5000. 1.0310 1.4660 0.4566 2.9536 10000. 1.0572 1.4929 0.4781 3.0282 20000. 1.0756 1.5099 0.5033 3.0888 50000. 1.0914 1.5234 0.5429 3.1576 100000. 1.0985 1.5288 0.5768 3.2042