structure(.Data = list(x1 = c(0, 0, 0, 0, 0, 0, 0.17, 0.17, 0.17, 
	0.17, 0.21, 0), x2 = c(0.23, 0.1, 0, 0.49, 0, 0.62, 0.27, 
	0.19, 0.21, 0.15, 0.36, 0), x3 = c(0, 0, 0, 0, 0, 0, 0.1, 
	0.1, 0.1, 0.1, 0.12, 0), x4 = c(0, 0, 0.1, 0, 0.62, 0, 0.38,
	0.38, 0.38, 0.38, 0.25, 0.55), x5 = c(0, 0.12, 0.12, 0.12, 
	0.12, 0, 0, 0.02, 0, 0.02, 0, 0), x6 = c(0.74, 0.74, 0.74, 
	0.37, 0.18, 0.37, 0, 0.06, 0.06, 0.1, 0, 0.37), x7 = c(0.03,
	0.04, 0.04, 0.02, 0.08, 0.01, 0.08, 0.08, 0.08, 0.08, 0.06, 
	0.08), y = c(98.7, 97.8, 96.6, 92, 86.6, 91.2, 81.9, 83.1, 
	82.4, 83.2, 81.4, 88.1)), class = "data.frame", row.names
	 = c("1", "2", "3", "4", "5", "6", "7", "8", "9", "10", 
	"11", "12"))