The merkle is probably lying. The article is poorly written and the numbers in the article has no sources or whatsoever. They linked coinmarketcap but it would take too much work to come up with a number from there. Cryptocompare.com on the other hand, gives us real time numbers.
The merkle also might be collecting data mainly from eurozone exchanges. So EURO stays on top, naturally.
However, I made a calculation based on the information at coinmarketcap myself:
*I didn't include the zero fee exchanges.*
EUR 24H volume: 14,823,399.00 USD
CNY 24H volume: 5,912,012.00 USD
JPY 24H volume: 33,186,500.00 USD
USD 24H volume: 130,020,518.00 USD
Total volume: 183,942,429.00 USD
USD: %70.68544148
EUR: %8.058716567
JPY: %18.04178632
CNY: %3.214055633
----------------------------------------
**I included the zero fee exchanges.**
EUR 24H volume: 16,773,029.00 USD
CNY 24H volume: 60,303,216.00 USD
JPY 24H volume: 113,726,100.00 USD
USD 24H volume: 182,247,188.00 USD
Total volume: 373,049,533.00 USD
USD: %48.85334838
EUR: %4.496193539
JPY: %30.48552268
CNY: %16.16493539
-----------------------------------------
Conclusion: The merkle is lying. There isn't any EUR volume as they suggested.
thanks a lot, high quality answer !