text_original: Close observation has established a well defined daily periodicity: so that the most favorable period for visiting the crater may always be known beforehand.
text_transcription: CLOSE OBSERVATION HAS ESTABLISHED A WELL DEFINED DAILY PERIODICITY SO THAT THE MOST FAVORABLE PERIOD FOR VISITING THE CRATER MAY ALWAYS BE KNOWN BEFOREHAND
phonemes: klˈoʊs ɑːbzɚvˈeɪʃən hɐz ɪstˈæblɪʃt ɐ wˈɛl dᵻfˈaɪnd dˈeɪli pˌiəɹɪˌɑːdˈɪsᵻɾi: sˌoʊ ðætðə mˈoʊst fˈeɪvɚɹəbəl pˈiəɹɪəd fɔːɹ vˈɪzɪɾɪŋ ðə kɹˈeɪɾɚ mˈeɪ ˈɔːlweɪz biː nˈoʊn bᵻfˈɔːɹhænd.