Cadence zone messages define the cadence zones of the user, one message per zone, ordered from the lowest to the highest. Each zone is bounded by the upper limit of the previous one and its own upper limit.
messageIndexStringIndex of the zone, starting at 0.
Upper limit of the zone, in revolutions per minute.
nameStringName of the zone.
mesgNumStringGlobal message number identifying the kind of message. Decoders use it to know which profile to apply to the data.