"X1"	"X2"	"X3"	"Y"
190	7.4	67	41
118	8	72	36
149	12.6	74	12
313	11.5	62	18
NA	14.3	56	NA
NA	14.9	66	28
299	8.6	65	23
99	13.8	59	19
19	20.1	61	8
194	8.6	69	NA
NA	6.9	74	7
256	9.7	69	16
290	9.2	66	11
274	10.9	68	14
65	13.2	58	18
334	11.5	64	14
307	12	66	34
78	18.4	57	6
322	11.5	68	30
44	9.7	62	11
8	9.7	59	1
320	16.6	73	11
25	9.7	61	4
92	12	61	32
66	16.6	57	NA
266	14.9	58	NA
NA	8	57	NA
13	12	67	23
252	14.9	81	45
223	5.7	79	115
279	7.4	76	37