如何使用datetimes和nan对象绘制数据？

import numpy as np
import pandas as pd
import matplotlib.pyplot as plt

dates = pd.date_range(start='2022-01-01', end='2022-01-10', freq='D')

data = np.array([1, 2, np.nan, 4, 5, np.nan, 7, 8, 9, np.nan])

df = pd.DataFrame(data, index=dates, columns=['Value'])

plt.plot(df.index, df['Value'])
plt.xlabel('Date')
plt.ylabel('Value')
plt.title('Data with NaN Values')
plt.show()