lines = '0.693 0.749 0.654 0.670
0.662 0.672 0.615 0.606
0.690 0.628 0.668 0.611
0.606 0.609 0.601 0.553
0.570 0.844 0.576 0.933'

data = strsplit(lines, '\\s+')[[1]]
data = as.double( data )