In a world blindly shuffling toward standardization -- beer, politicians and sitcoms -- even the atmosphere has a standard day (or standard atmosphere). What is the temperature and atmospheric pressure at sea level on a standard day?


15-degrees Celsius and 1013.2 millibars


59-degrees Celsius and 29.92 inches of mercury


0-degrees Fahrenheit and 29.92 inches of mercury


59-degrees Fahrenheit and 29.00 inches of mercury

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