This is data distribution, numbers respond to classes.
Counter({14: 850, 16: 849, 9: 848, 18: 848, 5: 848, 4: 847, 6: 847, 17: 846, 1: 845, 19: 845, 3: 845, 15: 845, 12: 844, 8: 844, 10: 844, 2: 843, 0: 841, 11: 840, 13: 837, 7: 834})