df_train.csv

audience,date_ymd,last_audience,low_price,center_price,high_price,quantity
11387,20201216,11360,432,486,540,47287
4868,20210226,11387,756,864,1080,37972
4756,20210303,4868,432,540,648,41188
4853,20210310,4756,432,486,540,50730
4744,20210313,4853,324,378,432,36980
9810,20210403,4744,648,702,756,35872
9173,20210407,9810,324,432,540,71082
6958,20210414,9173,324,432,540,75146
9720,20210418,6958,324,410,540,60751
4954,20210504,9720,864,918,972,41085
4752,20210512,4954,270,324,378,71138
4932,20210516,4752,324,378,432,87623
4942,20210522,4932,324,378,432,61323
4958,20210530,4942,972,1080,1296,22584
4897,20210926,4958,324,540,648,56319
4932,20210929,4897,432,540,864,48752
9789,20211002,4932,324,378,540,46452
11576,20211024,9789,756,864,1080,31528
11603,20211103,11576,324,432,540,58555
14867,20211127,11603,648,864,1080,21958
17544,20220218,14867,864,972,1080,17249
14696,20220302,17544,324,432,648,45758
18114,20220312,14696,216,324,540,55578
18090,20220402,18114,324,432,540,50592
17471,20220409,18090,432,486,648,45544
16704,20220514,17471,324,378,432,48707
14068,20220525,16704,648,702,756,38644
18960,20220618,14068,972,1080,1188,22106
19024,20220625,18960,540,648,756,51618
18466,20220709,19024,432,756,972,37040
20704,20220807,18466,1080,1296,1620,23210
20757,20220827,20704,432,540,648,52286
13923,20220831,20757,432,648,756,50634
20873,20220910,13923,1404,1458,1512,10899
19022,20221008,20873,540,648,864,30905
14445,20221012,19022,756,864,972,41215
22110,20221029,14445,540,594,648,37099
22563,20230217,22110,540,756,864,29589
21171,20230304,22563,486,594,756,34322
19054,20230318,21171,540,648,864,28079