1=if (group.getLength()<=16.2) return 0.0;else if (group.getLength()<=19.3) return 0.38;else if (group.getLength()<=23) return 0.37;else if (group.getLength()<=30) return 0.25;else return 0;
2=if (group.getLength()<=20.4) return 0.0;else if (group.getLength()<=24.1) return 0.38;else if (group.getLength()<=28.8) return 0.37;else if (group.getLength()<=37.5) return 0.25;else return 0;
3=if (group.getLength()<=24.3) return 0.0;else if (group.getLength()<=29) return 0.38;else if (group.getLength()<=34.5) return 0.37;else if (group.getLength()<=45) return 0.25;else return 0;

