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.

Tue, Oct 17, 2017 6:04:30 PM
 Temperature   Maximum:   24.8o  at 15:10:30, 10/17/2017 
 Minimum:   1.7o  at 08:20:30, 10/17/2017 
 Mean1  13.2o
 Average2  11.2o
 Relative Humidity   Maximum:   55.2%   at 04:37:30, 10/17/2017 
 Minimum:   19.8%   at 17:45:30, 10/17/2017 
 Mean1  37.5% 
 Average2  30.4% 
 Dewpoint   Maximum:   0.8o  at 15:10:30, 10/17/2017 
 Minimum:   -11.0o  at 06:39:30, 10/17/2017 
 Mean1  -5.1o
 Average2  -6.4o
 Sea Level Pressure   Maximum:   102.8 kPa   at 18:22:30, 10/16/2017 
 Minimum:   101.6 kPa   at 17:44:30, 10/17/2017 
 Mean1  102.2 kPa 
 Average2  102.2 kPa 
 Station Pressure   Maximum:   86.4 kPa   at 18:22:30, 10/16/2017 
 Minimum:   85.5 kPa   at 17:45:30, 10/17/2017 
 Mean1  85.9 kPa 
 Average2  85.9 kPa 
Wind Speed   Maximum:   2.9 m/s from NNW (332o  at 00:09:30, 10/17/2017 
 Average2  0.8 m/s  
 Wind Direction   Average3  from W (275o
 Solar Insolation   Maximum:   868.1 W/m2   at 12:58:30, 10/17/2017 
 Average2  221.6 W/m2 
 Rainfall this month   2.29 mm 
 Rainfall since midnight   0.00 mm 
 Past 24 hours   0.00 mm 
 Maximum rate   0.000 mm/hour   at 18:05:00, 10/16/2017 
 Wind-Chill Temperature   Maximum:   24.6 o  at 15:10:30, 10/17/2017 
 Minimum:   1.6 o  at 08:20:30, 10/17/2017 
 Mean1  13.1 o
 Average2  10.9 o
 Heat Index   Maximum:   25.1 o  at 15:11:30, 10/17/2017 
 Minimum:   1.7 o  at 08:20:30, 10/17/2017 
 Mean1  13.4 o
 Average2  11.5 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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