00: 3 a 3.5 kg (RN)
0: 3.5 a 4.5 kg (RN)
1: 4.5 a 5.5 kg (RN)
2: 5.5 a 6.5 kg (3 a 6 meses)
3: 6.5 a 7.5 kg (6 a 9 meses)
4: 7.5 a 8.5 kg (9 a 12 meses)