NSGA-II  after 250 generations: 100 solutions, IGD+ 0.1278, hypervolume 2.6914
         distance from the front 0.0956 to 0.1058, mean 0.0965
NSGA-II  after 1000 generations: 100 solutions, IGD+ 0.1267, hypervolume 2.6979
         distance from the front 0.0953 to 0.0984, mean 0.0959
MOEA/D   after 250 generations: 78 solutions, IGD+ 0.1294, hypervolume 2.6845
         distance from the front 0.0686 to 0.1048, mean 0.0980
MOEA/D   after 1000 generations: 97 solutions, IGD+ 0.0819, hypervolume 2.9394
         distance from the front 0.0452 to 0.0974, mean 0.0546
the whole front: hypervolume 3.3968
