list(p = 3, N = 21,
   Y = c(42, 37, 37, 28, 18, 18, 19, 20, 15, 14, 14, 13, 11, 12, 8, 7, 8, 8, 9, 15, 15),
   x = structure(.Data = c( 80, 27, 89,
                           80, 27, 88,
                           75, 25, 90,
                           62, 24, 87,
                           62, 22, 87,
                           62, 23, 87,
                           62, 24, 93,
                           62, 24, 93,
                           58, 23, 87,
                           58, 18, 80,
                           58, 18, 89,
                           58, 17, 88,
                           58, 18, 82,
                           58, 19, 93,
                           50, 18, 89,
                           50, 18, 86,
                           50, 19, 72,
                           50, 19, 79,
                           50, 20, 80,
                           56, 20, 82,
                           70, 20, 91), .Dim = c(21, 3)))