I checked for France : average frequency is 49,99456201 Hz in February with one measurement every 10 seconds (source : http://clients.rte-france.com/lang/fr/vis

I checked for France : average frequency is 49,99456201 Hz in February with one measurement every 10 seconds (source : http://clients.rte-france.com/lang/fr/visiteurs/vie/vie_frequence.jsp http://clients.rte-france.com/lang/fr/visiteurs/vie/vie_freq... ). Same info for November 2014 : 49,99994706 Hz.