Daily spot trading volumes on foreign exchange platforms run by Thomson Reuters fell 4.5 percent in October from the previous month, the company said on Tuesday, as some of the recent volatility created by China's yuan devaluation ebbed. The numbers from the New York-listed company also showed the total daily volumes across all types of trading, including swaps, forwards and options, slipped to $353 billion from $365 billion the previous month, and from $374 billion in October 2014. Average daily spot trading dropped to $104 billion in October from $109 billion, retreating further from a five-month high of $119 billion seen in August.