Sec. 212 Unlawful presence for a child under 18

Under Sect 212, exceptions for minors, it says no period of time in which an alien is under 18 years of age shall be taken into account in determining the period of unlawful presence in the Unites States under clause (I)

Does this mean the exception only applie to those overstay "more than 180 days but less than 1 year".

Does this mean, this exception does not apply to those "unlawfully present in the United States for one year or more"

Please clarify.

Thank you.