Number of severely errored seconds. A severely errored second is one with 50 or more CRC anomalies (see perfDataCV below) or at least one LOSW defect (see perfDataLOSWS below). In the 15 minute history, this register ranges from -9 to about 450. In the 24 hour history, it ranges from -9 to about 43200. (These limits may seem strange, but are a result of the UAS derivation and SES inhibition rules of the ETSI standard. This register is inhibited, that is not counted while UAS is counting. Deviations in the sampling period length can cause this register to deviate from its true value (see perfDataES).