Observation	x1	x2	x3	y
1	24.9	13.5	3.7	59.8
2	26.7	15.7	11.4	66.3
3	30.6	13.8	15.7	76.5
4	39.6	8.8	8.8	77.1
5	33.1	10.6	18.3	81.9
6	41.1	9.7	21.8	84.6
7	25.4	9.8	16.4	87.3
8	33.8	6.8	25.9	88.5
9	23.5	7.5	15.5	90.7
10	39.8	6.8	30.8	93.4