This graph shows real-time Seismogram data from a sub-station in North Devon at the time the 4.1-magnitude earthquake struck the Bristol Channel.
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A rather cloudy start for most, with rain spreading eastwards, clearing to brighter skies later in the day.
The letter was signed by the CBI, British Chambers of Commerce, the EEF, the Institute of Directors and the Federation of Small Businesses.
A spokesperson said Rory Stewart's remarks were in line with the British government’s stated position.