rownames,lsize,bodywt,brainwt
1,3,9.447,0.444
2,3,9.78,0.436
3,4,9.155,0.417
4,4,9.613,0.429
5,5,8.85,0.425
6,5,9.61,0.434
7,6,8.298,0.404
8,6,8.543,0.439
9,7,7.4,0.409
10,7,8.335,0.429
11,8,7.04,0.414
12,8,7.253,0.409
13,9,6.6,0.387
14,9,7.26,0.433
15,10,6.305,0.41
16,10,6.655,0.405
17,11,7.183,0.435
18,11,6.133,0.407
19,12,5.45,0.368
20,12,6.05,0.401