Table:
expected length of life

ex post
ex ante

years

asset description and code

highways, roads, streets, including: logging road, signs, guardrail, lighting, etc
22.1
28.7

rail track and roadbeds including: signals and interlockers
39.9
26.5

telephone and cablevision lines, underground and marine cables
19.4
16.2

communication towers, antennae, earth stations
27.0
20.1

gas mains and services
43.0
42.3

bulk storage
24.9
26.4

mean, all assets
29.4
25.3

Statement: the ex post estimates for the long-lived assets are 29 years.
Question: how many years are the ex post estimates for the long-lived assets?
Answer: [29.4]