speed	stride	sex
15.86	3.05	f
16.88	3.12	f
17.5	3.17	f
18.62	3.25	f
19.97	3.36	f
21.06	3.46	f
22.11	3.55	f
15.86	2.92	m
16.88	2.98	m
17.5	3.03	m
18.62	3.11	m
19.97	3.22	m
21.06	3.31	m
22.11	3.41	m