I'm pretty much a beginner Can someone explain to me how to correct miss handling of data? I would appreciate any help given :) For example this here's the data set: d = {'timestamp': ['2021-11-11 12:00:00','2021-11-11 12:01:00','2021-11-11 12:02:00','2021-11-11 12:03:00','2021-11-11 12:04:00', '2021-11-11 12:05:00','2021-11-11 12:06:00','2021-11-11 12:07:00','2021-11-11 12:08:00','2021-11-11 12:09:00'], 'value1': [1,1,2,3,4,4,4,np.nan,6,6], 'value2': [10,10,9,7,np.nan,5,5,5,5,5] } df = pd.DataFrame(data=d) ## Fill in the missing data in the value1 column print(df)