Interval	L	M	S	-3 SD	-2 SD	-1 SD	Median	1 SD	2 SD	3 SD
0-6 mo	0.7138	16.4915	0.09904	11.8	13.3	14.9	16.5	18.1	19.8	21.6
1-7 mo	0.7138	13.8733	0.10884	9.6	11	12.4	13.9	15.4	17	18.6
2-8 mo	0.7138	11.8137	0.11821	7.8	9.1	10.4	11.8	13.2	14.7	16.2
3-9 mo	0.7138	10.3499	0.12639	6.7	7.8	9.1	10.3	11.7	13.1	14.5
4-10 mo	0.7138	9.3426	0.1329	5.8	7	8.1	9.3	10.6	11.9	13.3
5-11 mo	0.7138	8.677	0.13782	5.3	6.4	7.5	8.7	9.9	11.2	12.5
6-12 mo	0.7138	8.2244	0.14171	5	6	7.1	8.2	9.4	10.6	11.9
7-13 mo	0.7138	7.8787	0.14512	4.7	5.7	6.8	7.9	9	10.3	11.5
8-14 mo	0.7138	7.5879	0.14836	4.4	5.4	6.5	7.6	8.7	9.9	11.2
9-15 mo	0.7138	7.3259	0.15166	4.2	5.2	6.2	7.3	8.5	9.6	10.9
10-16 mo	0.7138	7.0897	0.15514	4	5	6	7.1	8.2	9.4	10.6
11-17 mo	0.7138	6.8778	0.1588	3.8	4.8	5.8	6.9	8	9.2	10.4
12-18 mo	0.7138	6.6823	0.16252	3.7	4.6	5.6	6.7	7.8	9	10.2
13-19 mo	0.7138	6.4984	0.16617	3.5	4.4	5.4	6.5	7.6	8.8	10
14-20 mo	0.7138	6.3217	0.16964	3.4	4.3	5.3	6.3	7.4	8.6	9.8
15-21 mo	0.7138	6.1484	0.17287	3.2	4.1	5.1	6.1	7.2	8.4	9.6
16-22 mo	0.7138	5.977	0.17591	3.1	4	5	6	7.1	8.2	9.4
17-23 mo	0.7138	5.8083	0.17884	3	3.8	4.8	5.8	6.9	8	9.1
18-24 mo	0.7138	5.6454	0.18169	2.8	3.7	4.6	5.6	6.7	7.8	8.9