The NOTAM production rules indicate how to generate the content of the NOTAM/SNOWTAM fields. This small section needs to indicate how these fields are mapped onto the NOTAM, SNOWTAM, ASHTAM objects. This is most;y obvious, but for completeness sake it is better to be specified.
The "decoded NOTAM item" column used the terms from the ICAO DOC 8126, AIS Manual, 11th Edition, NOTAM Format, figure 6-A-1.