version_number [MPEG-2 Semantics]
The version_number field is a 5-bit unsigned integer field that begins at bit index 50 in a table section and that signals the version number the private table section. Each time a table section changes, this field is incremented by 1. When the maximum value of 31 is exceeded, version_number wraps around to 0 (+1 modulo 32). Receivers are expected to monitor this field and current_next_indicator to insure the most recent table section is in memory. When current_next_indicator indicates a "next" section, the value of version_number is the value the next version of this section will carry.
Depending on the table_id and specification publisher, the scope of version_number may vary.
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