CKM Again

The standard Euler parameters for the CKM matrix are (in degrees) very close to $13.01$, $2.39$ and $0.201$. Observe that these values are essentially the same as the three $R_2$ parameters $(a,b,c)$ $=$ $(0.231,1/24,0.0035)$, since these take the form $\tan \phi$. The difference is that the fourth phase parameter is now given as the product $abc$ of $R_2$ factors.