Statistics Norway


Explanation of symbols

Category not applicable .
Data not available ..
Data not yet available ...
Not for publication :
Nil -
Less than 0.5 of unit employed 0
Less than 0.05 of unit employed 0,0
Provisional or preliminary figure *
Break in the homogeneity of vertical series --
Break in the homogeneity of horizontal series |

Measures and weight

Length

m

 metre
mm millimetre = 0.001 m
cm centimetre = 0.01 m
km kilometre = 1 000 m
mil 10 kilometres = 10 000 m

Area

m2 square metre
a are = 100 m2
daa decare = 1 000 m2
ha hectare = 1 0 000 m2
km2 square kilometre = 1 000 000 m2

Volume

m3 cubic metre
l, L litre = 0.001 m3
hl, HL hectolitre = 0.1 m3 = 100 l
barrel US measure of volume for petroleum = (US) 0.159 m3 = 159 l

Mass (Weight)

kg kilogram
t ton = 1 000 kg
tkm measure of transport performance = t · km

Time

s second
min minute = 60 s
h hour = 60 min
d day = 24 h

Temperature

ºC degree Celsius

Electric current

A ampere

Energy/H4>
J joule, 1 J = 1 Ws
GJ gigajoule = 1 000 000 000 J
TJ terajoule = 1 000 000 000 000 J
PJ petajoule = 1 000 000 000 000 000 J
Ws watt second = 1 J
toe ton oil equivalent 42 622 000 000 J = ca. 42.6 GJ
kWh kilowatt hour = 3 600 000 J
MWh megawatt hour = 3 600 000 000 J
GWh gigawatt hour = 3 600 000 000 000 J
TWh terawatt hour = 3 600 000 000 000 000 J

Power

W watt 1 W =1 J/s = VA
kW kilowatt = 1 000 W
MW megawatt = 1 000 000 W
MVA megavolt ampere = 1 000 000 W

Units of measure of ships

GT Gross ton.
The gross tonnage of a ship indicates the volume of the whole ship including superstructure, deck and deck house.
NT Net ton.
The net tonnage indicates the size of cargo space.

Some prefixes

Prefix Symbol Factor
exa E 1018 =1 000 000 000 000 000 000
peta P 1015 =1 000 000 000 000 000
tera T 1012 =1 000 000 000 000
giga G 109 =1 000 000 000
mega M 106 =1 000 000
kilo k 103 =1 000
hekto h 102 =100
deka da 10 =10

Source: Norwegian Standards Association.