Data Collection - The Large Data Set

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Daily Maximum Temperature
Recorded over a 24 hour period and for overseas locations - the daily mean temperature is recorded
1 of 9
Daily Total Rainfall
Includes solid precipitation such as snow and hail which is melted before being included in any measurements - amounts less than 0.05mm are recorded as 'tr' or 'trace'
2 of 9
Daily Total Sunshine
Recorded to the nearest tenth of an hour
3 of 9
Daily Mean Wind Direction and Windspeed
In knots, averaged over 24 hours from midnight to midnight - mean wind directions are given as bearings and as cardinal (compass) directions - the data for the mean windspeed is also categorised according to the Beaufort Scale
4 of 9
Daily Maximum Gust
In knots - this is the highest instantaneous windspeed recorded- the direction from which the maximum gust was blowing is also recorded
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Daily Maximum Relative Humidity
Given as a percentage of air saturation with water vapour - above 95% give rise to misty and foggy conditions
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Daily Mean Cloud Cover
Measured in 'oktas' or eighths of the sky covered by cloud
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Daily Mean Visibility
Measured in meters - this is the greatest horizontal distance at which an object can be seen in daylight
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Daily Mean Pressure
Measured in hectopascals (hPA)
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Other cards in this set

Card 2

Front

Includes solid precipitation such as snow and hail which is melted before being included in any measurements - amounts less than 0.05mm are recorded as 'tr' or 'trace'

Back

Daily Total Rainfall

Card 3

Front

Recorded to the nearest tenth of an hour

Back

Preview of the back of card 3

Card 4

Front

In knots, averaged over 24 hours from midnight to midnight - mean wind directions are given as bearings and as cardinal (compass) directions - the data for the mean windspeed is also categorised according to the Beaufort Scale

Back

Preview of the back of card 4

Card 5

Front

In knots - this is the highest instantaneous windspeed recorded- the direction from which the maximum gust was blowing is also recorded

Back

Preview of the back of card 5
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