Table 9a. Estimated observation SDs.
Index	Fleet number	Age	Estimate
1	1	1	0.72160
2	1	2	0.24962
3	1	3	0.08371
4	1	4	0.08371
5	1	5	0.08371
6	1	6	0.08371
7	1	7	0.08371
8	2	1	0.61984
9	2	2	0.25607
10	2	3	0.25607
11	2	4	0.25607
12	2	5	0.25607