Birth	0.16 lbs.	0.17 lbs.	0.19 lbs.	0.22  lbs.	0.25  lbs.	0.27 lbs.	0.28 lbs.	0.31 lbs.	0.34 lbs.
1 week	0.23	0.25	0.31	0.34	0.41	0.44	0.50	0.56	0.59
2 weeks	0.31	0.34	0.41	0.44	0.50	0.63	0.69	0.78	0.84
3 weeks	0.38	0.44	0.50	0.56	0.69	0.81	0.88	1.00	1.09
4 weeks	0.44	0.50	0.59	0.69	0.81	0.94	1.06	1.19	1.31
5 weeks	0.50	0.56	0.69	0.81	0.94	1.06	1.22	1.38	1.50
6 weeks	0.56	0.69	0.78	0.94	1.09	1.25	1.38	1.50	1.69
7 weeks	0.63	0.75	0.91	1.06	1.22	1.38	1.53	1.69	1.88
8 weeks	0.69	0.81	1.00	1.19	1.34	1.50	1.69	1.81	2.06
9 weeks	0.75	0.94	1.09	1.25	1.44	1.63	1.81	2.00	2.19
10 weeks	0.81	1.00	1.19	1.38	1.56	1.75	1.94	2.13	2.38
11 weeks	0.88	1.06	1.31	1.50	1.69	1.94	2.13	2.31	2.63
12 weeks	0.94	1.19	1.38	1.63	1.88	2.06	2.31	2.56	2.81
13 weeks	1.00	1.25	1.50	1.75	2.00	2.25	2.50	2.75	3.06
14 weeks	1.06	1.38	1.63	1.88	2.13	2.44	2.69	2.94	3.25
15 weeks	1.19	1.44	1.75	2.00	2.31	2.56	2.88	3.19	3.50
16 weeks	1.25	1.56	1.88	2.13	2.44	2.75	3.06	3.38	3.69
17 weeks	1.31	1.63	1.94	2.25	2.56	2.88	3.19	3.56	3.88
18 weeks	1.38	1.75	2.06	2.31	2.69	3.00	3.38	3.75	4.06
19 weeks	1.44	1.81	2.13	2.44	2.75	3.13	3.50	3.88	4.19
20 weeks	1.50	1.88	2.19	2.56	2.88	3.25	3.63	4.00	4.38
21 weeks	1.56	1.94	2.25	2.63	3.00	3.38	3.75	4.13	4.50
22 weeks	1.56	2.00	2.31	2.69	3.06	3.50	3.88	4.25	4.63
23 weeks	1.63	2.06	2.38	2.75	3.13	3.56	4.00	4.38	4.75
24 weeks	1.63	2.06	2.44	2.81	3.19	3.63	4.06	4.44	4.88
25 weeks	1.69	2.13	2.50	2.88	3.25	3.69	4.13	4.50	4.94
26 weeks	1.69	2.13	2.50	2.94	3.31	3.75	4.19	4.56	5.00
18 Months	2.00 lbs.	2.50 lbs.	3.00 lbs.	3.50 lbs.	4.00 lbs.	4.50 lbs.	5.00 lbs.	5.50 lbs.	6.00 lbs.