Summary of the past 24 hours from the unofficial station on the roof of the Eyring Science Center on the campus of Brigham Young University in Provo, Utah, USA.

Sat, Dec 16, 2017 1:34:30 PM
 Temperature   Maximum:   6.7o  at 14:47:30, 12/15/2017 
 Minimum:   -3.5o  at 06:28:30, 12/16/2017 
 Mean1  1.6o
 Average2  -0.5o
 Relative Humidity   Maximum:   81.8%   at 06:21:30, 12/16/2017 
 Minimum:   31.6%   at 14:05:30, 12/15/2017 
 Mean1  56.7% 
 Average2  62.3% 
 Dewpoint   Maximum:   -3.8o  at 13:15:30, 12/16/2017 
 Minimum:   -9.4o  at 01:59:30, 12/16/2017 
 Mean1  -6.6o
 Average2  -7.0o
 Sea Level Pressure   Maximum:   102.2 kPa   at 13:34:30, 12/15/2017 
 Minimum:   100.7 kPa   at 04:13:30, 12/16/2017 
 Mean1  101.5 kPa 
 Average2  101.3 kPa 
 Station Pressure   Maximum:   85.4 kPa   at 13:34:30, 12/15/2017 
 Minimum:   84.1 kPa   at 04:20:30, 12/16/2017 
 Mean1  84.8 kPa 
 Average2  84.6 kPa 
Wind Speed   Maximum:   4.9 m/s from SSE (160o  at 07:13:30, 12/16/2017 
 Average2  1.2 m/s  
 Wind Direction   Average3  from S (178o
 Solar Insolation   Maximum:   411.6 W/m2   at 13:35:30, 12/15/2017 
 Average2  97.0 W/m2 
 Rainfall this month   0.25 mm 
 Rainfall since midnight   0.00 mm 
 Past 24 hours   0.00 mm 
 Maximum rate   0.000 mm/hour   at 13:35:00, 12/15/2017 
 Wind-Chill Temperature   Maximum:   6.6 o  at 14:47:30, 12/15/2017 
 Minimum:   -8.8 o  at 07:13:30, 12/16/2017 
 Mean1  -1.1 o
 Average2  -1.3 o
 Heat Index   Maximum:   7.0 o  at 14:47:30, 12/15/2017 
 Minimum:   -3.4 o  at 06:28:30, 12/16/2017 
 Mean1  1.8 o
 Average2  -0.3 o

1 The mean (in the weather industry this can be referred to as either the mean daily value or the average daily value) is actually known statistically as the midrange or midextreme value: (max(x)+min(x))/2.
2 The average given here is also known statistically as the arithmetic mean: Σxi/N where the sum is performed over the available data for the previous 24-hour period. Normally the available data is the 1-minute average (arithmetic mean of data taken once per second) for temperature, humidity, mean sea-level pressure, station pressure, solar insolation, and dewpoint. For wind chill the 1-minute value is the minimum recorded over that period. For wind speed and heat index it is the maximum during the period.
3 The average wind direction is the vector average which incorporates both the direction and speed. It is the net direction a parcel of air would have moved if you could track it over the 1-minute period.

Click here for british units

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