Page History

Definitions and Formatting Instructions for Units of Measure used in MMS data product files

The following table lays out the agreed units of measure for common quantities in MMS data, and displays the approved format for the UNITS and SI_CONVERSION variable attributes in the CDF files. The formatting obeys the following rules:

UNITS

1. only letters, numbers, ^, /, (, ),  <space> and -
2. No curly braces or other markup
3. Designed for readability and use as plot labels

SI_CONVERSION

1. only letters, numbers, ^, <space> and -
2. No curly braces or other markup
3. No compound expressions; each individual quantity to be space-separated from the one that follows it.
4. Only base SI units, no power of ten prefixes
5. Quantities for which no base SI unit exists or can be reached by a multiplicative factor (e.g., Celsius) to have " > " as its SI_CONVERSION string.

more to follow ... 

Previous Definitions of Units of Measure used in MMS data product files:

...