x	y	sigma y
2	6.9	2
4	18.8	2
6	26.8	2
8	39.2	2
10	45.5	2
12	53.7	2
14	68.5	2
16	72.2	2
18	82.1	2
20	93.7	2
22	104.6	2
24	114.3	2