This is the 15446th most frequent Turkish word.
tabelasında
"On the signboard."
Here, 'tabelasında' refers to 'on the sign' indicating where the mentioned information (menu discounts) is written.
Restoranın tabelasında menü indirimleri yazıyordu.
On the restaurant sign, menu discounts were written.
In this sentence, 'tabelasında' denotes 'on the bus sign' specifying the location of the directional writing.
Otobüsün tabelasında gideceği yönü belirten bir yazı vardı.
On the bus sign, there was a writing indicating the direction it was heading.
In this case, 'tabelasında' means 'on the library sign' showing where the working hours were written.