Table 9a. Estimated observation SDs.
Index	Fleet number	Age	Estimate
1	1	1	0.71721
2	1	2	0.25015
3	1	3	0.07990
4	1	4	0.07990
5	1	5	0.07990
6	1	6	0.07990
7	1	7	0.07990
8	2	1	0.62238
9	2	2	0.26631
10	2	3	0.26631
11	2	4	0.26631
12	2	5	0.26631