ðeɪ wɜː ʃˈɑːkt tə fˈaɪnd ðætðə sˈoːɹs wʌz ɐstˈɑːnɪʃɪŋli hˈaɪ lˈɛvəlz ʌv ɹˈeɪdɑːn ɪn hɪz bˈeɪsmənt ænd ɪt wʌz nˌɑːt ɹᵻlˈeɪɾᵻd tə ðə nˈuːklɪɹ plˈænt.
They were shocked to find that the source was astonishingly high levels of radon in his basement and it was not related to the nuclear plant.