swimmer.number	wet.suit.velocity	swim.suit.velocity	velocity.diff
1	1.57	1.49	0.08000000000000007
2	1.47	1.37	0.09999999999999987
3	1.42	1.35	0.06999999999999984
4	1.35	1.27	0.08000000000000007
5	1.22	1.12	0.09999999999999987
6	1.75	1.64	0.1100000000000001
7	1.64	1.59	0.04999999999999982
8	1.57	1.52	0.050000000000000044
9	1.56	1.5	0.06000000000000005
10	1.53	1.45	0.08000000000000007
11	1.49	1.44	0.050000000000000044
12	1.51	1.41	0.10000000000000009