Complex sentence: The value was subsequently lowered after more measurements were taken and 2002 NT7 is no longer considered to pose any risk, and was removed from the Sentry Risk Table on 1 August 2002.
Split into simpler sentences: The value was subsequently lowered after more measurements were taken. So 2002 NT7 is no longer considered to pose any risk and was removed from the Sentry Risk Table on 1 August 2002.