Oops - I think that the conversion chart (grams to ounces) is dealing with weight ounces, not the liquid measure of ounces. As in, 16 ounces to the pound, rather than 8 ounces to the cup.
Yes, you're right! My bad...I missed lunch today ;-)
Here's a fluid ounces to grams calculator:
Convert US fluid ounce to gram - Conversion of Measurement Units
It makes a difference....dry ounce conversion is shown in the chart as 8 ounces equalling approx. 226.8 grams whereas the fluid ounces calculator gives us 236.5882375 grams for eight fluid ounces.
Thanks for catching my error :-)