部分合约历史数据有异常值

[tosmart01]

夜盘到 23点的品种，在请求1h周期k线时，会出现 hour=23的k线, 实际k线夜盘数据应该是, 21,22, 但出现了 23

df = api.get_kline_serial("CZCE.SR809",duration_seconds=60*60, data_length=1000)
df["date"] = pd.to_datetime(df['datetime']) + timedelta(hours=8)
df.groupby(df['date'].dt.hour).date.count()

"""
date
9     126
10    126
11    126
13    126
14    127
21    123
22    123
23    123
Name: date, dtype: int64
"""
df.loc[df['date'].dt.hour==23].to_dicts("records")
"""
[{'datetime': 1.521126e+18,
  'id': 1948.0,
  'open': 5727.0,
  'high': 5728.0,
  'low': 5725.0,
  'close': 5727.0,
  'volume': 632.0,
  'open_oi': 109811.0,
  'close_oi': 109763.0,
  'symbol': 'CZCE.SR809',
  'duration': 3600,
  'date': Timestamp('2018-03-15 23:00:00')},
 {'datetime': 1.5212124e+18,
  'id': 1956.0,
  'open': 5714.0,
  'high': 5715.0,
  'low': 5708.0,
  'close': 5708.0,
  'volume': 1127.0,
  'open_oi': 112206.0,
  'close_oi': 112005.0,
  'symbol': 'CZCE.SR809',
  'duration': 3600,
  'date': Timestamp('2018-03-16 23:00:00')},
]
"""