Varying data about solubility of sodium acetate trihydrate

I recently looked up the solubility of sodium acetate trihydrate in water at 20°C and found surprisingly diverse values such as:  

613g/l ([GESTIS-Stoffdatenbank](http://gestis.itrust.de/nxt/gateway.dll/gestis_de/010760.xml?f=templates$fn=default.htm$3.0))  

762g/l ([TU Freiberg](http://www.geo.tu-freiberg.de/Hauptseminar/2008/Daniel_Oriwol.pdf))  

1250g/l ([applichem, a vendor](https://www.applichem.com/shop/produktdetail/as/natriumacetat-trihydrat-ibiochemicai/))  

612g/l ([German Wikipedia](https://de.wikipedia.org/wiki/Natriumacetat))  

1233g/l ([English Wikipedia](https://en.wikipedia.org/wiki/Sodium_acetate))  

I also found 408g/l somewhere but I can't find the source anymore.


As those values differ by a huge amount, I wanted to ask if someone knows how it comes to such a big difference.


Furthermore, I would be very grateful if someone could point out the correct value.


