| Lycka | Lust | Leva | |
| Födelsevikt / Birthweight | 80 g | 80 g | 76 g |
| 1 vecka/week | 142 g | 156 g | 132 |
| 2 veckor/weeks | 264 g | 292 g | 244 g |
| 3 veckor/weeks | 386 g | 408 g | 380 g |
| 4 veckor/weeks | 486 g | 542 g | 492 g |
| 5 veckor/weeks | 604 g | 652 g | 600 g |
| 6 veckor/weeks | 712 g | 772 g | 740 g |
| 7 veckor/weeks | 866 g | 886 g | 872 g |
| 8 veckor/weeks | 958 g | 1018 g | 1026 g |
| 9 veckor/weeks | 1104 g | 1088 g | 1172 g |
| 10 veckor/weeks | 1262 g | 1330 g | 1316 g |
| 11 veckor/weeks | 1348 g | 1388 g | 1434 g |
| 12 veckor/weeks | 1515 g | 1546 g | 1598 g |