DF = data.frame(
    Block=c( 'A', 'B', 'C', 'D', 'E' ),
    CD=c( 8, 11, 9, 16, 24 ),
    DP=c( 2, 1, 12, 11, 19 ),
    LM=c( -2, 0, 6, 2, 11 )
)