Interval	L	M	S	-3 SD	-2 SD	-1 SD	Median	1 SD	2 SD	3 SD
0-3 mo	0.4252	5.5822	0.14155	3.5	4.1	4.8	5.6	6.4	7.3	8.2
1-4 mo	0.5408	4.1837	0.14611	2.5	3	3.6	4.2	4.8	5.5	6.2
2-5 mo	0.6316	3.2594	0.15573	1.9	2.3	2.8	3.3	3.8	4.3	4.9
3-6 mo	0.7066	2.7161	0.16952	1.4	1.8	2.3	2.7	3.2	3.7	4.2
4-7 mo	0.7704	2.2991	0.18602	1.1	1.5	1.9	2.3	2.7	3.2	3.7
5-8 mo	0.8262	1.9451	0.20505	0.8	1.2	1.6	1.9	2.4	2.8	3.2
6-9 mo	0.8756	1.6363	0.22644	0.6	0.9	1.3	1.6	2	2.4	2.8
7-10 mo	0.9201	1.3903	0.2492	0.4	0.7	1	1.4	1.7	2.1	2.5
8-11 mo	0.9605	1.2025	0.27282	0.2	0.6	0.9	1.2	1.5	1.9	2.2
9-12 mo	0.9976	1.069	0.29743	0.1	0.4	0.8	1.1	1.4	1.7	2