data; param c := 1 5 2 3 3 8 4 5 5 1 6 3 7 7 8 4 9 6 10 3 ; param beta := 1 1.2 2 1 3 .9 4 .6 5 1.5 6 1 7 .7 8 1.1 9 .95 10 .75 ;