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Journey to PaleoPresto where ancient data flows,
Select the Common Era, where modern time grows.
Find the Last Millennium Reanalysis 2.1.0 visualizer true,
Click New Orleans' grid point, let the data break through.
Download the CSV treasure, examine what you've found,
The answer to your quest lies within data's ground.
In the year twelve-twenty-one, what anomaly did LMR's data gift?
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Need a hint?
Make sure you select the correct version of the dataset. Search through the CSV file for the row corresponding to year 1221. Look for the LMR mean column to find your answer.