The same values should be used for all species present in the system.
A value of £3 million has been used for that purpose.
The value was used to select the process to run.
Often some particular constant value will be used multiple times in a program.
It does not provide guidance as to when fair value should be used.
These values can be used in any code that would use a normal value.
In cases before November 1995 a numerical value, out of 24, is not used.
A value of often used in practice is 5%.
This value will also be used for warehouse stock control purposes.
In practice, of course, measurements are made using local values, which vary little enough at the Earth's surface.