! data points for least squares fit
! x      y       dy
!
1.0	5.0	0.6
2.0	7.9	0.6
3.0	8.2	0.8
4.0	10.5	1.0
5.0	13.5	1.1
6.0	17.5	1.5
7.0	25.3	1.5
8.0	23.2	1.7
9.0	25.5	1.8
10.0	24.0	2.0
11.0	20.1	1.5
12.0	17.5	1.4
13.0	17.8	1.4
14.0	14.3	1.1
15.0	14.9	1.1
16.0	13.2	0.9
17.0	12.5	0.9
18.0	9.4	0.8
19.0	11.2	1.0
20.0	12.7	1.1