Sample_ID	Customer_Label	Subgroup1
zr31987_1T	A.1	Young
zr31987_2T	A.2	Young
zr31987_3T	A.3	Young
zr31987_4T	A.4	Young
zr31987_5T	A.5	Young
zr31987_6T	Y.1	Old
zr31987_7T	Y.2	Old
zr31987_8T	Y.3	Old
zr31987_9T	Y.4	Old
zr31987_10T	Y.5	Old