Interval	L	M	S	-3 SD	-2 SD	-1 SD	Median	1 SD	2 SD	3 SD
0-3 mo	0.8538	10.5967	0.11683	7	8.2	9.4	10.6	11.8	13.1	14.4
1-4 mo	0.8538	8.7743	0.13505	5.3	6.5	7.6	8.8	10	11.2	12.4
2-5 mo	0.8538	7.1455	0.15574	3.9	5	6	7.1	8.3	9.4	10.6
3-6 mo	0.8538	5.9428	0.17798	2.9	3.9	4.9	5.9	7	8.1	9.2
4-7 mo	0.8538	5.1554	0.19661	2.3	3.2	4.2	5.2	6.2	7.2	8.3
5-8 mo	0.8538	4.6834	0.20988	1.9	2.8	3.7	4.7	5.7	6.7	7.8
6-9 mo	0.8538	4.3922	0.21849	1.7	2.5	3.4	4.4	5.4	6.4	7.4
7-10 mo	0.8538	4.1971	0.22383	1.5	2.4	3.3	4.2	5.2	6.1	7.1
8-11 mo	0.8538	4.0329	0.22876	1.4	2.3	3.1	4	5	5.9	6.9
9-12 mo	0.8538	3.8692	0.23503	1.3	2.1	3	3.9	4.8	5.7	6.7
10-13 mo	0.8538	3.7174	0.24257	1.2	2	2.8	3.7	4.6	5.6	6.5
11-14 mo	0.8538	3.5892	0.25105	1.1	1.9	2.7	3.6	4.5	5.5	6.4
12-15 mo	0.8538	3.4811	0.25988	1	1.8	2.6	3.5	4.4	5.4	6.3
13-16 mo	0.8538	3.3844	0.26843	0.9	1.7	2.5	3.4	4.3	5.3	6.2
14-17 mo	0.8538	3.2934	0.27635	0.8	1.6	2.4	3.3	4.2	5.2	6.2
15-18 mo	0.8538	3.2051	0.28388	0.7	1.5	2.3	3.2	4.1	5.1	6.1
16-19 mo	0.8538	3.1173	0.2913	0.6	1.4	2.2	3.1	4	5	6
17-20 mo	0.8538	3.0295	0.29869	0.6	1.3	2.1	3	4	4.9	5.9
18-21 mo	0.8538	2.9427	0.30582	0.5	1.2	2.1	2.9	3.9	4.8	5.8
19-22 mo	0.8538	2.8576	0.31251	0.4	1.2	2	2.9	3.8	4.7	5.7
20-23 mo	0.8538	2.7779	0.31896	0.4	1.1	1.9	2.8	3.7	4.6	5.6
21-24 mo	0.8538	2.7091	0.32567	0.3	1	1.8	2.7	3.6	4.5	5.5