Table 10. Estimated observation SDs.
Index	Fleet number	Age	Estimate
1	1	1	0.58938
2	1	2	0.22289
3	1	3	0.04924
4	1	4	0.04924
5	1	5	0.04924
6	1	6	0.11333
7	1	7	0.11333
8	2	1	2.35937
9	2	2	1.87083
10	2	3	1.87083
11	2	4	1.87083
12	2	5	1.87083
13	3	1	2.56051
14	3	2	1.71447
15	3	3	1.71447
16	3	4	1.71447
17	4	1	2.46699