Table 9a. Estimated observation SDs.
Index	Fleet number	Age	Estimate
1	1	1	0.71659
2	1	2	0.25075
3	1	3	0.08000
4	1	4	0.08000
5	1	5	0.08000
6	1	6	0.08000
7	1	7	0.08000
8	2	1	0.62373
9	2	2	0.26623
10	2	3	0.26623
11	2	4	0.26623
12	2	5	0.26623