Source           EUR         GBP         SAR     
  ------------------  ----------  ----------  ----------
               yahoo   0.858100-   0.744800    3.752400-
        openexchange   0.858289    0.744652-   3.752456 
                cnbc   0.858300    0.744700       NaN   
            netdania   0.858360    0.744870       NaN   
             reuters   0.858400    0.744823    3.752600+
         frankfurter   0.858520    0.747080       NaN   
                  xe   0.859764+   0.748750+      NaN   
           bloomberg      NaN         NaN         NaN   
  ------------------  ----------  ----------  ----------
                 avg   0.858533    0.745667    3.752500 
              median   0.858360    0.744823    3.752456 
                 min   0.858100    0.744652    3.752400 
                 max   0.859764    0.748750    3.752600 
                diff   0.001664    0.004098    0.000200 
  ------------------  ----------  ----------  ----------
                avg2   0.858374    0.745254    3.752500 
             median2   0.858360    0.744823    3.752456 
                min2   0.858289    0.744700    3.752400 
                max2   0.858520    0.747080    3.752600 
               diff2   0.000231    0.002380    0.000200