Assertion: barometer's reading | /r/HasProperty | around 31
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Source sentences:
text: In general, a falling hand on a barometer indicates a low pressure system is on the way with poor weather (usually a storm with snow or rain); a steady barometer means there will be no changes with the ongoing pressure system; and a rising barometer means high pressure and fair weather; an even higher reading, around 31, means an extremely dry atmosphere.