-1=if (group.getLength()<=2.9) return 0.0;else if (group.getLength()<=5)return  0.08;else if (group.getLength()<=7.3)return  0.86;else if (group.getLength()<=8.2)return  0.06;else return  0;
1=if (group.getLength()<=6.9) return 0.0;else if (group.getLength()<=9)return  0.08;else if (group.getLength()<=11.3)return  0.86;else if (group.getLength()<=12.2)return  0.06;else return  0;
0=if (group.getLength()<=4.9) return 0.0;else if (group.getLength()<=7)return  0.08;else if (group.getLength()<=9.3)return  0.86;else if (group.getLength()<=10.2)return  0.06;else return  0;