3.9 m rough ice N A J 40 0 6 0 0 0 0 0 0 0 0 3000 1600 1.0 2.5 0.9 0.6 3.9 1440 0 0 0 1 -1.9 40 4.0 1440 -1460 0 0 1 0 400 1460 -1480 0 0 1 0 2000 1600 0 0.4 0 2.0 0 100 1.0 1000 21 1 1426 1631 2048 25 2020 300 340 20 10 80 120 12 10