set xlabel '(J+1)^2'
set ylabel 'R(J)-Q(J)-Q(J+1)-P(J+1) (cm^{-1})'
set nokey
#set output 'lambdoub.eps'
#set term postscript eps enhanced solid
plot [0:300][0:4]'lam.dat' using 2:3,'lam.dat' using 2:4,'lam.dat' using 2:5


