Businesses tab, row 1 (tab-separated):
fhrsId	businessName	businessType	address	postcode	localAuthority	rating	ratingDate	changeType	changedFields	observedAt	sourceUrl	attribution	runId

Runs tab, row 1 (tab-separated):
runId	checkedAt	mode	status	scanned	matched	returned	noChanges	previousBaselineAt	delivery	runUrl