I want to extra Landsat time series for multiple location.I refer to the code in this [tutorial][1], but I only got two columns of NDVI data，like this：[![enter image description here][2]][2]

this is the code：https://code.earthengine.google.com/b411447fec1ad4a91f57195fe13f1289?noload=1

Please give me some advice.Thank you very much！


  [1]: https://spatialthoughts.com/2020/04/13/extracting-time-series-ee/#respond
  [2]: https://i.sstatic.net/cdZiG.png