Obs	age	sex	height	weight
1	11	M	66	142
2	11	F	62	138
3	11	M	55	169
4	12	M	67	172
5	12	F	66	188
6	12	M	68	199
7	13	M	62	132
8	13	M	64	122
9	14	F	62	133
10	15	M	55	120