Because the clocks were, on average, well above sea level, this meant that TAI slowed by about one part in a trillion.
bɪkˈʌz ðə klˈɑːks wɜː, ˌɔn ˈævɹɪdʒ, wˈɛl əbˌʌv sˈiː lˈɛvəl, ðɪs mˈɛnt ðæt tˌiːˌeɪˈaɪ slˈoʊd baɪ ɐbˌaʊt wˈʌn pˈɑːɹt ɪn ɐ tɹˈɪliən.