Statistics - large data set

What months are included

May to October

What years are included

1987 and 2015

Which of these months have 30 days

September and June

Cities included

Beijing, Camborne, Heathrow, Horn, Jacksonville, Leeming, Leuchars, Perth

Coastal cities

Leuchars NE scotland

Camborne/Hurn SW England

Jacksonville E USA

Perth SW Australia

What is special about Perth

it is the only city in the southern hemisphere so in winter at this time

Daily mean temp

Celsius, 24 hrs

Heathrow is warmest in UK

Jacksonville >Beijing Perth

Beijing max 32, Leuchars 19

2015>1987 all locations

Daily total rainfall

mm (tr <0.05mm), 24 hrs

max Uk 51.6 Heathrow October

max all 102 Perth May

Heathrow is driest worldwide average 1,8

Camborne and Jacksonville mean wettest

Daily total sunshine

Hours

Max Heathrow 15hrs, and min 0

Daily maximum relative humidity

amount of water vapour in the air as % of max possible

Daily mean windspeed

knots 1=1.15mph

Beaufort scale, discreet, most are light some moderate

Daily Maximum gust

max gust Leuchars + Perth

min Hurn + Kacksonville

Daily mean wind direction

direction it came from

nearest 10 degrees

and cardinal direction for UK

daily maximum gust direction

direction it came from

nearest 10 degrees

and cardinal direction for UK

data is n/a

we exclude this data from our calculations/statistical tests

Visibility

Greatest horizontal distance at which an object can be seen in daylight

measured in Dm (decametres 10 m)

Pressure

hectopascals

SMALL RANGE

900-1040

max 1036 min 989 HEATHROW 2015

Daily mean total cloud

How many eights of the sky are covered OKTAS