Normalize notes with different octets (#2)?

[amilan17]

140	This represents the length of time over which the statistical processing was applied. The local time defined in section 1 represents the end of this processing. For instance, a value of 24h corresponds to a statistical processing between the previous day at local time and this day at local time.

found in 

• GRIB2_Template_4_95_ProductDefinitionTemplate_en.csv
• GRIB2_Template_4_96_ProductDefinitionTemplate_en.csv
• GRIB2_Template_4_97_ProductDefinitionTemplate_en.csv
• GRIB2_Template_4_98_ProductDefinitionTemplate_en.csv

143	This also represents the length of time range of the statistical processed fields. For instance, to create a 24h accumulation (encoded in octet 29-32), we could use several 3h accumulations, or 6h accumulation, a mixture of the two, etc.

• GRIB2_Template_4_95_ProductDefinitionTemplate_en.csv

145	This also represents the length of time range of the statistical processed fields. For instance, to create a 24h accumulation (encoded in octet 32-35), we could use several 3h accumulations, or 6h accumulation, a mixture of the two, etc.

• GRIB2_Template_4_96_ProductDefinitionTemplate_en.csv

147	This also represents the length of time range of the statistical processed fields. For instance, to create a 24h accumulation (encoded in octet 34-37), we could use several 3h accumulations, or 6h accumulation, a mixture of the two, etc.

• GRIB2_Template_4_97_ProductDefinitionTemplate_en.csv

149	This also represents the length of time range of the statistical processed fields. For instance, to create a 24h accumulation (encoded in octet 37-40), we could use several 3h accumulations, or 6h accumulation, a mixture of the two, etc.

• GRIB2_Template_4_98_ProductDefinitionTemplate_en.csv

Originally posted by @amilan17 in #118 (comment)