This read-only CwrCwConsecutiveSevErrSecond value reports the number of Codeword Consecutively Severely Errored Seconds detected since link power-up, as captured at the timestamp recorded in cwr24HrUpdateTime. It gives an admin the consecutively-severe-error figure for that specific 24-hour reporting entry, flagging the most serious sustained-error events on a daily basis. For example, a day whose cwr24HrConsecSvErrSeconds entry is nonzero while most other days read zero would stand out to an admin reviewing the link's daily history as a day with a sustained severe outage.