--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test-data/column_join_out2.pileup	Tue Apr 01 09:30:45 2014 -0400
@@ -0,0 +1,65 @@
+chr1	1	C	1				
+chr1	2	G	2				
+chr1	3	A	2				
+chr1	4	C	2				
+chr1	5	T	3				
+chr1	6	G	3				
+chr1	7	C	4				
+chr1	8	A	4				
+chr1	9	T	5				
+chr1	10	G	5				
+chr1	11	A	5				
+chr1	12	C	5				
+chr1	42			T	1	C	1
+chr1	43			G	2	C	2
+chr1	44			T	2	T	2
+chr1	45			C	3	A	3
+chr1	46			G	3	G	4
+chr1	47			T	4	A	5
+chr1	48			A	4	T	5
+chr1	49			C	5	G	5
+chr1	50			A	5	A	5
+chr1	51			A	5	G	5
+chr1	52			A	5		
+chr1	53			G	5		
+chr2	1	T	6				
+chr2	2	G	6				
+chr2	3	C	7				
+chr2	4	G	7				
+chr2	5	G	7				
+chr2	6	A	7				
+chr2	7	T	8				
+chr2	8	A	8				
+chr2	9	C	9				
+chr2	10	T	9				
+chr2	11	C	10				
+chr2	12	G	10				
+chr2	13	A	11				
+chr2	52					T	5
+chr2	53					A	5
+chr2	54					T	5
+chr2	55					T	5
+chr2	56					C	5
+chr2	57					T	5
+chr2	58					T	6
+chr2	59					A	6
+chr2	77			C	6		
+chr2	78			G	6		
+chr2	79			T	7		
+chr2	80			C	7		
+chr2	81			G	7		
+chr2	82			A	8		
+chr2	83			A	8		
+chr2	84			T	8		
+chr2	85			G	8		
+chr2	86			C	9		
+chr2	87			G	9		
+chr2	88			G	10		
+chr2	89			G	10		
+chr3	60					C	6
+chr3	61					T	6
+chr3	62					C	6
+chr3	63					C	7
+chr3	64					A	7
+chr3	65					T	7
+chr3	66					A	7