Daily Mean: The average temperature for a day computed by averaging either the hourly readings or, more commonly, the maximum and minimum temperatures.

 

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Daily Mean: The average temperature for a day computed by averaging either the hourly readings or, more commonly, the maximum and minimum temperatures.

Mean Sun: A fictitious sun which is assumed to move in the celestial equator at a uniform speed corresponding to the average angular speed of the real Sun in the ecliptic, the mean sun being alternate . . . View Full Definition

Mean Sea Level (MSL): A tidal datum. The arithmetic mean of hourly heights observed over the National Tidal Datum Epoch. Shorter series are specified in the name; e.g., monthly mean sea level and yearly mean sea level.

Mean Temperature: The average of temperature readings taken over a specified amount of time. Often the average of the maximum and minimum temperatures.

Mean Tide Level (MTL): A tidal datum. The arithmetic mean of mean high water and mean low water. Same as half-tide level.

Mean Wage: The average wage for a worker in a specified position or occupation, which is determined by adding together the total wages for all incumbents in a specific position or occupation and then d . . . View Full Definition

Mean Time: Time based upon the hour angle of the mean sun as distinguished from apparent time which is based upon the position of the real Sun. The difference between apparent and mean time is known as . . . View Full Definition

Mean Sea Level: The average height of the sea surface water level. For the United States, it is computed by averaging the levels of all tide stages over a nineteen year period, determined from hourly height . . . View Full Definition

Mean Of The Sample: The arithmetic average; that is, the sum of the observations divided by the number of observations.

Mean Motion: Average motion or rate of travel within a specified time period.