lenGroup meanN meanw varN varw 1 260.2 3.2 2653.50 0.20 2 281.7 6.9 1491.40 0.10 3 144.9 12.6 182.50 0.10 4 88.8 27.9 145.90 1.40 5 67.7 49.9 49.50 5.10 6 43.1 75.7 19.50 45.00 7 55.9 109.5 601.40 24.80 8 26.9 158.6 61.20 11.80 9 19.8 196.0 104.20 39.90 10 15.0 260.8 0.20 13.10