[질문] 천안시21번버스배차시간 첫차부터막차까지(백석농공단지랑청당벽산 둘다) 배차간격말?

공단6:35 7:05 30 55 8:20 45 9:10 35 10:00 25 50 11:15 40 12:05 30 55 13:20 45 14:10 35 15:00 25 50 16:15 40 17:05 30 55 18:20 45 19:10/35/20:00/25등