LAST TEN MINUTES

This graph shows GB mains frequency for the last ten minutes. At the present time it does not auto-refresh but this may be introduced at a later date. You can refresh manually using the button below.

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AVERAGE FREQUENCY OVER PAST (UP TO) 24 HOURS

EXPERIMENTAL!

This graph shows the distribution of measured frequencies for up to the past 24 hours. Measurements are taken each second and used to create the distribution curve.

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