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However, at the end of the 10 years, the home owner sells the house and recoups some of the initial additional investment costs. Depending on the residual value estimation approach, the present value net cost savings in life-cycle costs to the homeowner is either $41 714 or $84 997.
The most stable clocks are assigned the most weight. The clocks in the UTC(NIST) time scale also contribute to the International Atomic Time (TAI) and Coordinated Universal Time (UTC). UTC(NIST) serves as a national standard for frequency, time interval, and time-of-day. It is distributed through the NIST time and frequency services and continuously compared to the time and frequency standards located around the world.