104932
104932
friartikkel
2013-03-22T14:38:00.000Z
en

# Explanation of symbols

Published:

Updated:

 . Category not applicableFigures do not exist at this time, because the category was not in use when the figures were collected. .. Data not availableFigures have not been entered into our databases and are therefore unknown. : ConfidentialFigures are not published so as to avoid identifying persons or companies.

#### In older tables also these symbols may appear:

 … Data not yet available - Nil * Provisional or preliminary figure

### 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

 m 2 square metre a are = 100 m 2 daa decare = 1 000 m 2 ha hectare = 1 0 000 m 2 km 2 square kilometre = 1 000 000 m 2

#### Volume

 m 3 cubic metre l, L litre = 0.001 m 3 hl, HL hectolitre = 0.1 m 3 = 100 l barrel US measure of volume for petroleum = (US) 0.159 m 3 = 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 10 18 =1 000 000 000 000 000 000
peta P 10 15 =1 000 000 000 000 000
tera T 10 12 =1 000 000 000 000
giga G 10 9 =1 000 000 000
mega M 10 6 =1 000 000
kilo k 10 3 =1 000
hekto h 10 2 =100
deka da 10 =10

Source: Norwegian Standards Association