Code:
ABC, 2011/11/11, T1,S1, 5.6
ABC, 2011/11/11, T1,S2, 2.3
ABC, 2011/11/11, T1,S3, 6.5
ABC, 2011/11/11, T1,S4, 4.5
ABC, 2011/11/11, T2,S1, 5.5
ABC, 2011/11/11, T2,S2, 2.4
ABC, 2011/11/11, T2,S3, 6.5
ABC, 2011/11/11, T2,S4, 4.4
ABC, 2011/11/11, T3,S1, 5.3
ABC, 2011/11/11, T3,S2, 2.3
ABC, 2011/11/11, T3,S3, 6.3
ABC, 2011/11/11, T3,S4, 4.3
XYZ, 2011/11/11, T1,S1, 5.6
XYZ, 2011/11/11, T1,S2, 2.3
XYZ, 2011/11/11, T1,S3, 6.5
XYZ, 2011/11/11, T2,S1, 5.5
XYZ, 2011/11/11, T2,S2, 2.4
XYZ, 2011/11/11, T2,S3, 6.4