x	UInt32					
y	String					
d	Date					
0	0	1970-01-01
1	1	1970-01-02
2	2	1970-01-03
3	3	1970-01-04
4	4	1970-01-05
5	5	1970-01-06
6	6	1970-01-07
7	7	1970-01-08
8	8	1970-01-09
9	9	1970-01-10