# Commission Delegated Regulation (EU) 2017/654 of 19 December 2016 supplementing Regulation (EU) 2016/1628 of the European Parliament and of the Council with regard to technical and general requirements relating to emission limits and type-approval for internal combustion engines for non-road mobile machinery, Appendix 4

Extent: E+W+S+N.I.

1980 INTERNATIONAL GRAVITY FORMULA
The acceleration of Earth's gravity, a g, varies depending on the location and a g shall be calculated for a respective latitude, by means of equation (7-166):
ag = 9,7803267715 [1 + 5,2790414 × 10– 3 sin2 θ + 2,32718 × 10– 5 sin4 θ + 1,262 × 10– 7 sin6 θ + 7 × 10– 10 sin8 θ]
(7-166)
Where:
θ Degrees north or south latitude

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Source: https://www.legislation.gov.uk/eur/2017/654/annex/VII/appendix/4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-654/annex-VII/appendix-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.