age	weight	gender
0	1.2	male
1	2.3	male
2	3.5	male
3	4.8	male
4	5.8	male
5	6.9	male
6	8	male
0	0.9	female
1	1.9	female
2	2.8	female
3	3.9	female
4	4.8	female
5	5.8	female
6	7	female