1 Scope
2 Normative references
3 Definitions
4 Method of calculation
4.1 Principle
4.2 The SGERG-88 equation
4.3 Input variables
4.4 Ranges of application
4.5 Uncertainty
5 Suppliers of computer programmes
Annexes
A Symbols and units
B Description of the SGERG-88 method
C Example calculations
D Conversion factors
E Performance over wider ranges of application
F Subroutine SGERG.FOR in Fortran
G Bibliography