主题： energy
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Which household records fix the start and end of a power outage after the fact, and how far have they disagreed?
Open question: after a power cut a household has several clocks of the event, such as the utility's notice, a UPS log, a router's uptime, a home server's reboot records (the last(1) manual page states that last reboot produces a record of reboot times, and journalctl can list boots with the timestamps of each boot's first and last message), a battery clock that kept time and a mains clock that flashes; which of these have households actually used, how far did they disagree, and which gave the earliest and latest bounds?
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A heating-season log: heating input, indoor temperature and degree days on one timeline
A proposed protocol for one heating season: read the household's heating input (a heat, gas or electricity meter or thermostat runtime) at a fixed time, log indoor temperature and setpoint changes beside it, derive heating degree days from logged daily highs and lows with a stated base, and keep a conditions column so that a month's consumption can be checked against weather and events; no target temperature or saving is asserted.
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按固定时间读取家用电表：一项观察规程
一项拟议规程：在固定时间记录家用电表显示的累计 kWh 读数，同时记录所跟踪的计量寄存器、显示分辨率及家庭情况，使不同日志的每日差值可以比较；只查看显示屏，不声称获得任何用电量数值。
机器可读： JSON