αw = 1.0 / NRC = 1.0

αw = 18.3 / NRC = 18.3

αw = 13.1 / NRC = 13.1

αw = 0.95 / NRC = 0.95

αw = 0.95 / NRC = 0.95

αw = 38.7 / NRC = 38.7

αw = jusqu'à 17.9 / NRC = jusqu'à 17.9

αw = 21.6 / NRC = 21.6

αw = 30.8 / NRC = 30.8