Alpha vantage 为什么alphavantage的销量为零，价格错误

我试图使用一个看似不错的想法，但有些价格和数量是错误的：

例如：

如下图所示，2019-08-05年的成交量为零，价格小幅2个数量级。还有更多的例子说明同样的事情会发生。这意味着api不能用于分析。这些值出现的原因是什么

{
"Meta Data": {
    "1. Information": "Daily Time Series with Splits and Dividend Events",
    "2. Symbol": "SMT.LON",
    "3. Last Refreshed": "2019-08-07",
    "4. Output Size": "Compact",
    "5. Time Zone": "US/Eastern"
},
"Time Series (Daily)": {
    "2019-08-07": {
        "1. open": "521.0000",
        "2. high": "530.0000",
        "3. low": "519.5000",
        "4. close": "522.1314",
        "5. adjusted close": "522.1314",
        "6. volume": "1259995",
        "7. dividend amount": "0.0000",
        "8. split coefficient": "1.0000"
    },
    "2019-08-06": {
        "1. open": "516.5000",
        "2. high": "525.9450",
        "3. low": "513.0000",
        "4. close": "518.0000",
        "5. adjusted close": "518.0000",
        "6. volume": "3353161",
        "7. dividend amount": "0.0000",
        "8. split coefficient": "1.0000"
    },
    "2019-08-05": {
        "1. open": "5.2430",
        "2. high": "5.2430",
        "3. low": "5.2430",
        "4. close": "5.2430",
        "5. adjusted close": "5.2430",
        "6. volume": "0",
        "7. dividend amount": "0.0000",
        "8. split coefficient": "1.0000"
    },
    "2019-08-02": {
        "1. open": "5.3989",
        "2. high": "5.3989",
        "3. low": "5.3989",
        "4. close": "5.3989",
        "5. adjusted close": "5.3989",
        "6. volume": "0",
        "7. dividend amount": "0.0000",
        "8. split coefficient": "1.0000"
    },
    "2019-08-01": {
        "1. open": "558.0000",
        "2. high": "568.5000",
        "3. low": "557.0000",
        "4. close": "568.5000",
        "5. adjusted close": "568.5000",
        "6. volume": "2141407",
        "7. dividend amount": "0.0000",
        "8. split coefficient": "1.0000"
    },
    "2019-07-31": {
        "1. open": "562.5000",
        "2. high": "565.5000",
        "3. low": "560.0580",
        "4. close": "563.0000",
        "5. adjusted close": "563.0000",
        "6. volume": "1519041",
        "7. dividend amount": "0.0000",
        "8. split coefficient": "1.0000"
    },
    "2019-07-30": {
        "1. open": "5.5441",
        "2. high": "5.5441",
        "3. low": "5.5441",
        "4. close": "5.5441",
        "5. adjusted close": "5.5441",
        "6. volume": "0",
        "7. dividend amount": "0.0000",
        "8. split coefficient": "1.0000"
    },
    "2019-07-29": {
        "1. open": "5.5449",
        "2. high": "5.5449",
        "3. low": "5.5449",
        "4. close": "5.5449",
        "5. adjusted close": "5.5449",
        "6. volume": "0",
        "7. dividend amount": "0.0000",
        "8. split coefficient": "1.0000"
    },

---

你解决了这个问题吗？您是否能够使用这些数据进行有意义的分析？