Normalize notes with different octets (#3)?

[amilan17]

150	The reference time in octets 44-50 and the forecast time together define the beginning of the overall time interval.
151	The reference time in octets 41-47 and the forecast time together define the beginning of the overall time interval.
152	The reference time in octets 39-45 and the forecast time together define the beginning of the overall time interval.
153	The reference time in octets 36-42 and the forecast time together define the beginning of the overall time interval.
154	The reference time in octets 37-43 and the forecast time together define the beginning of the overall time interval.
155	The reference time in octets 34-40 and the forecast time together define the beginning of the overall time interval.
156	The reference time in octets 32-38 and the forecast time together define the beginning of the overall time interval.

Originally posted by @amilan17 in #118 (comment)

[amilan17]

to be determined if it makes sense to normalize these notes. If not, please close.