This is the 466th most frequent Estonian word.
seisuga
"As of" or "as at."
Here, 'seisuga' denotes the moment in time when the participant count was final or applicable.
Registreeritud osalejate arv oli seisuga eilne õhtu 150.
As of yesterday evening, there were 150 registered participants.
In this sentence, 'seisuga' specifies a particular moment in the time of an update or status.
Seisuga kell 12.00 ei olnud saabunud ühtegi uut teadet.
As of 12:00, no new announcements had arrived.
The word 'seisuga' is used here to indicate a specific point in time or a date related to the presented data.