day group n ncry
 1 0  8  5
 1 1  1  0
 2 0  6  4
 2 1  1  0
 3 0  5  4
 3 1  1  0
 4 0  6  5
 4 1  1  1
 5 0  5  1
 5 1  1  0
 6 0  9  5
 6 1  1  0
 7 0  8  3
 7 1  1  0
 8 0  8  4
 8 1  1  0
 9 0  5  2
 9 1  1  0
10 0  9  1
10 1  1  1
11 0  6  1
11 1  1  0
12 0  9  1
12 1  1  0
13 0  8  3
13 1  1  0
14 0  5  1
14 1  1  0
15 0  6  2
15 1  1  0
16 0  8  1
16 1  1  0
17 0  6  2
17 1  1  1
18 0  8  3
18 1  1  0