lake gender size y1 y2 y3 y4 y5 1 1 1 7 1 0 0 5 1 1 0 4 0 0 1 2 1 0 1 16 3 2 2 3 1 0 0 3 0 1 2 3 2 1 1 2 2 0 0 1 2 1 0 13 7 6 0 0 2 0 1 0 1 0 1 0 2 0 0 3 9 1 0 2 3 1 1 3 7 1 0 1 3 1 0 8 6 6 3 5 3 0 1 2 4 1 1 4 3 0 0 0 1 0 0 0 4 1 1 13 10 0 2 2 4 1 0 9 0 0 1 2 4 0 1 3 9 1 0 1 4 0 0 8 1 0 0 1