casting	alloy	bar	tensile
1	A	1	13.2
1	A	2	15.5
2	A	1	15.2
2	A	2	15
3	A	1	14.8
3	A	2	14.2
4	A	1	14.6
4	A	2	15.1
1	B	1	17.1
1	B	2	16.7
2	B	1	16.5
2	B	2	17.3
3	B	1	16.1
3	B	2	15.4
4	B	1	17.4
4	B	2	16.8
1	C	1	14.1
1	C	2	14.8
2	C	1	13.2
2	C	2	13.9
3	C	1	14.5
3	C	2	14.7
4	C	1	13.8
4	C	2	13.5