"Thirty Nine" started with a rating of 4%.
According to Nielsen Korea, an audience rating research company, the first episode of JTBC's Wednesday-Thursday drama "Thirty Nine", which aired on February 16, recorded an audience rating of 4.406% based on pay TV households nationwide.
This is similar to the last episode of "Artificial City" with a rating of 4.695%. "Artificial City" started off with an audience rating of 3.576% in the first episode.
"Thirty Nine", starring Son Ye Jin, Jeon Mi Do, and Kim Ji Hyeon, is a real human romance that deals with the deep story of friendship, love, and life of three friends who are in their forties.
Meanwhile, Son Ye Jin is expected to return to the drama after two years after "Crash Landing on You". This is also Jeon Mi Do's return after finishing "Hospital Playlist" last year.
Source[1]