I changed the setting when the Gauch start the analysis of the data. The previous setting was K1:GRD-LSC_LOCK_STATE_N => 1100. The new setting is K1:GRD-LSC_LOCK_STATE_N => 9900, that is, more than OBSERVATION_WITHOUT_LINES.
This new setting is valid from today's monitor (2025-02-14 0:0:0 UTC).