@Override
public String toString() {
return super.toString() +
"+---------------------------------------------------------------------------+\n" +
"| Population statistics |\n" +
"+---------------------------------------------------------------------------+\n" +
format(cpattern, "Age:", p(_age)) +
format(cpattern, "Fitness:", "") +
format(spattern, "min =", d(_fitness.getMin())) +
format(spattern, "max =", d(_fitness.getMax())) +
format(spattern, "mean =", d(_fitness.getMean())) +
format(spattern, "var =", d(_fitness.getVariance())) +
format(spattern, "std =", d(sqrt(_fitness.getVariance()))) +
"+---------------------------------------------------------------------------+";
}